diff --git a/backend/src/db/api/types.ts b/backend/src/db/api/types.ts
index e312e8d..e8e986a 100644
--- a/backend/src/db/api/types.ts
+++ b/backend/src/db/api/types.ts
@@ -53,6 +53,8 @@ export interface CurrentUser {
   app_role?: {
     globalAccess?: boolean | null;
     name?: string | null;
+    /** Authorization scope of the role (`roles.scope`): organization/school/campus/… */
+    scope?: string | null;
     /** Present on the loaded role instance attached to the request. */
     getPermissions?: () => Promise<PermissionLike[]>;
   } | null;
@@ -69,8 +71,11 @@ export interface CurrentUser {
   email?: string | null;
   campusId?: string | null;
   campus?: { code?: string | null; name?: string | null } | null;
+  schoolId?: string | null;
+  school?: { id?: string | null; name?: string | null } | null;
   staff_user?: Array<{
     campusId?: string | null;
+    schoolId?: string | null;
     staff_type?: string | null;
     campus?: { code?: string | null; name?: string | null } | null;
   }> | null;
diff --git a/backend/src/db/migrations/20260612010000-add-schools-tier.ts b/backend/src/db/migrations/20260612010000-add-schools-tier.ts
new file mode 100644
index 0000000..9e3f93d
--- /dev/null
+++ b/backend/src/db/migrations/20260612010000-add-schools-tier.ts
@@ -0,0 +1,100 @@
+import { DataTypes, type QueryInterface } from 'sequelize';
+
+/**
+ * School tier (American Organization → School → Campus hierarchy). Adds the
+ * `schools` table and a nullable `schoolId` foreign key on `campuses`, `users`,
+ * and `staff`. Like every other relation in this codebase the link is an
+ * app-level UUID column with no DB-level constraint (`constraints: false` in the
+ * models). `schoolId` is left nullable here; the reseed assigns every campus to
+ * a school (campus belongs to exactly one school). Idempotent: the table and
+ * each column are only created if missing.
+ */
+async function tableExists(
+  queryInterface: QueryInterface,
+  table: string,
+): Promise<boolean> {
+  const [results] = await queryInterface.sequelize.query(`
+    SELECT 1 FROM information_schema.tables
+    WHERE table_name = '${table}'
+  `);
+  return (results as unknown[]).length > 0;
+}
+
+async function columnExists(
+  queryInterface: QueryInterface,
+  table: string,
+  column: string,
+): Promise<boolean> {
+  const [results] = await queryInterface.sequelize.query(`
+    SELECT 1 FROM information_schema.columns
+    WHERE table_name = '${table}' AND column_name = '${column}'
+  `);
+  return (results as unknown[]).length > 0;
+}
+
+async function addSchoolIdColumn(
+  queryInterface: QueryInterface,
+  table: string,
+): Promise<void> {
+  if (!(await columnExists(queryInterface, table, 'schoolId'))) {
+    await queryInterface.addColumn(table, 'schoolId', {
+      type: DataTypes.UUID,
+      allowNull: true,
+    });
+  }
+}
+
+export default {
+  up: async (queryInterface: QueryInterface) => {
+    if (!(await tableExists(queryInterface, 'schools'))) {
+      await queryInterface.createTable('schools', {
+        id: {
+          type: DataTypes.UUID,
+          defaultValue: DataTypes.UUIDV4,
+          primaryKey: true,
+        },
+        name: { type: DataTypes.TEXT, allowNull: false },
+        code: { type: DataTypes.TEXT, allowNull: false },
+        address: { type: DataTypes.TEXT, allowNull: true },
+        phone: { type: DataTypes.TEXT, allowNull: true },
+        email: { type: DataTypes.TEXT, allowNull: true },
+        description: { type: DataTypes.TEXT, allowNull: true },
+        active: {
+          type: DataTypes.BOOLEAN,
+          allowNull: false,
+          defaultValue: false,
+        },
+        importHash: {
+          type: DataTypes.STRING(255),
+          allowNull: true,
+          unique: true,
+        },
+        organizationId: { type: DataTypes.UUID, allowNull: true },
+        createdById: { type: DataTypes.UUID, allowNull: true },
+        updatedById: { type: DataTypes.UUID, allowNull: true },
+        createdAt: { type: DataTypes.DATE, allowNull: false },
+        updatedAt: { type: DataTypes.DATE, allowNull: false },
+        deletedAt: { type: DataTypes.DATE, allowNull: true },
+      });
+    }
+
+    await addSchoolIdColumn(queryInterface, 'campuses');
+    await addSchoolIdColumn(queryInterface, 'users');
+    await addSchoolIdColumn(queryInterface, 'staff');
+  },
+
+  down: async (queryInterface: QueryInterface) => {
+    if (await columnExists(queryInterface, 'staff', 'schoolId')) {
+      await queryInterface.removeColumn('staff', 'schoolId');
+    }
+    if (await columnExists(queryInterface, 'users', 'schoolId')) {
+      await queryInterface.removeColumn('users', 'schoolId');
+    }
+    if (await columnExists(queryInterface, 'campuses', 'schoolId')) {
+      await queryInterface.removeColumn('campuses', 'schoolId');
+    }
+    if (await tableExists(queryInterface, 'schools')) {
+      await queryInterface.dropTable('schools');
+    }
+  },
+};
diff --git a/backend/src/db/models/campuses.ts b/backend/src/db/models/campuses.ts
index 0b84198..4a14662 100644
--- a/backend/src/db/models/campuses.ts
+++ b/backend/src/db/models/campuses.ts
@@ -17,6 +17,7 @@ import type { AttendanceSessions } from './attendance_sessions';
 import type { Classes } from './classes';
 import type { Messages } from './messages';
 import type { Organizations } from './organizations';
+import type { Schools } from './schools';
 import type { Staff } from './staff';
 import type { Timetables } from './timetables';
 import type { Users } from './users';
@@ -44,6 +45,8 @@ export class Campuses extends Model<
   declare active: CreationOptional<boolean>;
   declare importHash: CreationOptional<string | null>;
   declare organizationId: CreationOptional<string | null>;
+  /** School scope (Organization → School → Campus). Nullable until backfilled. */
+  declare schoolId: CreationOptional<string | null>;
   declare createdById: CreationOptional<string | null>;
   declare updatedById: CreationOptional<string | null>;
   declare createdAt: CreationOptional<Date>;
@@ -63,6 +66,8 @@ export class Campuses extends Model<
   declare setMessages_campus: HasManySetAssociationsMixin<Messages, string>;
   declare getOrganization: BelongsToGetAssociationMixin<Organizations>;
   declare setOrganization: BelongsToSetAssociationMixin<Organizations, string>;
+  declare getSchool: BelongsToGetAssociationMixin<Schools>;
+  declare setSchool: BelongsToSetAssociationMixin<Schools, string>;
   declare getCreatedBy: BelongsToGetAssociationMixin<Users>;
   declare setCreatedBy: BelongsToSetAssociationMixin<Users, string>;
   declare getUpdatedBy: BelongsToGetAssociationMixin<Users>;
@@ -105,6 +110,12 @@ export class Campuses extends Model<
       constraints: false,
     });
 
+    db.campuses.belongsTo(db.schools, {
+      as: 'school',
+      foreignKey: { name: 'schoolId' },
+      constraints: false,
+    });
+
     db.campuses.belongsTo(db.users, { as: 'createdBy' });
     db.campuses.belongsTo(db.users, { as: 'updatedBy' });
   }
@@ -157,6 +168,7 @@ export default function (sequelize: Sequelize): typeof Campuses {
         unique: true,
       },
       organizationId: { type: DataTypes.UUID, allowNull: true },
+      schoolId: { type: DataTypes.UUID, allowNull: true },
       createdById: { type: DataTypes.UUID, allowNull: true },
       updatedById: { type: DataTypes.UUID, allowNull: true },
       createdAt: { type: DataTypes.DATE },
diff --git a/backend/src/db/models/index.ts b/backend/src/db/models/index.ts
index e9c3a1b..2cd5b69 100644
--- a/backend/src/db/models/index.ts
+++ b/backend/src/db/models/index.ts
@@ -34,6 +34,7 @@ import policy_acknowledgments from './policy_acknowledgments';
 import policy_documents from './policy_documents';
 import roles from './roles';
 import safety_quiz_results from './safety_quiz_results';
+import schools from './schools';
 import staff from './staff';
 import staff_attendance_records from './staff_attendance_records';
 import subjects from './subjects';
@@ -129,6 +130,7 @@ const models = {
   policy_documents: policy_documents(sequelize),
   roles: roles(sequelize),
   safety_quiz_results: safety_quiz_results(sequelize),
+  schools: schools(sequelize),
   staff: staff(sequelize),
   staff_attendance_records: staff_attendance_records(sequelize),
   subjects: subjects(sequelize),
diff --git a/backend/src/db/models/organizations.ts b/backend/src/db/models/organizations.ts
index 3abb837..749b437 100644
--- a/backend/src/db/models/organizations.ts
+++ b/backend/src/db/models/organizations.ts
@@ -110,6 +110,14 @@ export class Organizations extends Model<
       constraints: false,
     });
 
+    db.organizations.hasMany(db.schools, {
+      as: 'schools_organization',
+      foreignKey: {
+          name: 'organizationId',
+      },
+      constraints: false,
+    });
+
 
     db.organizations.hasMany(db.academic_years, {
       as: 'academic_years_organization',
diff --git a/backend/src/db/models/schools.ts b/backend/src/db/models/schools.ts
new file mode 100644
index 0000000..2b604e5
--- /dev/null
+++ b/backend/src/db/models/schools.ts
@@ -0,0 +1,114 @@
+import {
+  DataTypes,
+  Model,
+  type CreationOptional,
+  type InferAttributes,
+  type InferCreationAttributes,
+  type Sequelize,
+} from 'sequelize';
+import type { Db } from '@/db/types';
+import type {
+  BelongsToGetAssociationMixin,
+  BelongsToSetAssociationMixin,
+  HasManyGetAssociationsMixin,
+  HasManySetAssociationsMixin,
+} from 'sequelize';
+import type { Campuses } from './campuses';
+import type { Organizations } from './organizations';
+import type { Users } from './users';
+
+/**
+ * School tier (American Organization → School → Campus hierarchy). A school
+ * belongs to one organization and owns one or more campuses. The school head is
+ * the Principal (school scope); campuses keep their own per-campus `timezone`
+ * (a school may span timezones), so timezone is intentionally NOT on this model.
+ */
+export class Schools extends Model<
+  InferAttributes<Schools>,
+  InferCreationAttributes<Schools>
+> {
+  declare id: CreationOptional<string>;
+  declare name: string;
+  declare code: string;
+  declare address: string | null;
+  declare phone: string | null;
+  declare email: string | null;
+  declare description: string | null;
+  declare active: CreationOptional<boolean>;
+  declare importHash: CreationOptional<string | null>;
+  declare organizationId: CreationOptional<string | null>;
+  declare createdById: CreationOptional<string | null>;
+  declare updatedById: CreationOptional<string | null>;
+  declare createdAt: CreationOptional<Date>;
+  declare updatedAt: CreationOptional<Date>;
+  declare deletedAt: CreationOptional<Date | null>;
+
+  declare getCampuses_school: HasManyGetAssociationsMixin<Campuses>;
+  declare setCampuses_school: HasManySetAssociationsMixin<Campuses, string>;
+  declare getOrganization: BelongsToGetAssociationMixin<Organizations>;
+  declare setOrganization: BelongsToSetAssociationMixin<Organizations, string>;
+  declare getCreatedBy: BelongsToGetAssociationMixin<Users>;
+  declare setCreatedBy: BelongsToSetAssociationMixin<Users, string>;
+  declare getUpdatedBy: BelongsToGetAssociationMixin<Users>;
+  declare setUpdatedBy: BelongsToSetAssociationMixin<Users, string>;
+
+  static associate(db: Db): void {
+    db.schools.hasMany(db.campuses, {
+      as: 'campuses_school',
+      foreignKey: { name: 'schoolId' },
+      constraints: false,
+    });
+
+    db.schools.belongsTo(db.organizations, {
+      as: 'organization',
+      foreignKey: { name: 'organizationId' },
+      constraints: false,
+    });
+
+    db.schools.belongsTo(db.users, { as: 'createdBy' });
+    db.schools.belongsTo(db.users, { as: 'updatedBy' });
+  }
+}
+
+export default function (sequelize: Sequelize): typeof Schools {
+  Schools.init(
+    {
+      id: {
+        type: DataTypes.UUID,
+        defaultValue: DataTypes.UUIDV4,
+        primaryKey: true,
+      },
+      name: { type: DataTypes.TEXT, allowNull: false },
+      code: { type: DataTypes.TEXT, allowNull: false },
+      address: { type: DataTypes.TEXT },
+      phone: { type: DataTypes.TEXT },
+      email: { type: DataTypes.TEXT },
+      description: { type: DataTypes.TEXT },
+      active: {
+        type: DataTypes.BOOLEAN,
+        allowNull: false,
+        defaultValue: false,
+      },
+      importHash: {
+        type: DataTypes.STRING(255),
+        allowNull: true,
+        unique: true,
+      },
+      organizationId: { type: DataTypes.UUID, allowNull: true },
+      createdById: { type: DataTypes.UUID, allowNull: true },
+      updatedById: { type: DataTypes.UUID, allowNull: true },
+      createdAt: { type: DataTypes.DATE },
+      updatedAt: { type: DataTypes.DATE },
+      deletedAt: { type: DataTypes.DATE },
+    },
+    {
+      sequelize,
+      modelName: 'schools',
+      timestamps: true,
+      paranoid: true,
+      freezeTableName: true,
+    },
+  );
+
+  return Schools;
+}
diff --git a/backend/src/db/models/staff.ts b/backend/src/db/models/staff.ts
index 9bb3f19..6abfcbe 100644
--- a/backend/src/db/models/staff.ts
+++ b/backend/src/db/models/staff.ts
@@ -20,6 +20,7 @@ import type { ClassSubjects } from './class_subjects';
 import type { Classes } from './classes';
 import type { File } from './file';
 import type { Organizations } from './organizations';
+import type { Schools } from './schools';
 import type { Users } from './users';
 
 export class Staff extends Model<
@@ -38,6 +39,8 @@ export class Staff extends Model<
   declare deletedAt: CreationOptional<Date | null>;
   declare campusId: CreationOptional<string | null>;
   declare organizationId: CreationOptional<string | null>;
+  /** School scope (Organization → School → Campus). Nullable. */
+  declare schoolId: CreationOptional<string | null>;
   declare userId: CreationOptional<string | null>;
   declare createdById: CreationOptional<string | null>;
   declare updatedById: CreationOptional<string | null>;
@@ -53,6 +56,8 @@ export class Staff extends Model<
   declare setOrganization: BelongsToSetAssociationMixin<Organizations, string>;
   declare getCampus: BelongsToGetAssociationMixin<Campuses>;
   declare setCampus: BelongsToSetAssociationMixin<Campuses, string>;
+  declare getSchool: BelongsToGetAssociationMixin<Schools>;
+  declare setSchool: BelongsToSetAssociationMixin<Schools, string>;
   // Eager-loaded association (populated by `include`).
   declare campus?: NonAttribute<Campuses>;
   declare getUser: BelongsToGetAssociationMixin<Users>;
@@ -141,6 +146,14 @@ export class Staff extends Model<
       constraints: false,
     });
 
+    db.staff.belongsTo(db.schools, {
+      as: 'school',
+      foreignKey: {
+        name: 'schoolId',
+      },
+      constraints: false,
+    });
+
     db.staff.belongsTo(db.users, {
       as: 'user',
       foreignKey: {
@@ -250,6 +263,7 @@ status: {
       deletedAt: { type: DataTypes.DATE },
       campusId: { type: DataTypes.UUID, allowNull: true },
       organizationId: { type: DataTypes.UUID, allowNull: true },
+      schoolId: { type: DataTypes.UUID, allowNull: true },
       userId: { type: DataTypes.UUID, allowNull: true },
       createdById: { type: DataTypes.UUID, allowNull: true },
       updatedById: { type: DataTypes.UUID, allowNull: true },
diff --git a/backend/src/db/models/users.ts b/backend/src/db/models/users.ts
index 63eb5da..deb1c23 100644
--- a/backend/src/db/models/users.ts
+++ b/backend/src/db/models/users.ts
@@ -29,6 +29,7 @@ import type { Messages } from './messages';
 import type { Organizations } from './organizations';
 import type { Permissions } from './permissions';
 import type { Roles } from './roles';
+import type { Schools } from './schools';
 import type { Staff } from './staff';
 
 const providers = config.providers;
@@ -55,6 +56,8 @@ export class Users extends Model<
   declare organizationId: CreationOptional<string | null>;
   /** Campus scope for campus-bound roles (Workstream 3 §3.1). Nullable. */
   declare campusId: CreationOptional<string | null>;
+  /** School scope for school-bound roles (Principal/Registrar). Nullable. */
+  declare schoolId: CreationOptional<string | null>;
   declare createdById: CreationOptional<string | null>;
   declare updatedById: CreationOptional<string | null>;
   declare createdAt: CreationOptional<Date>;
@@ -82,6 +85,8 @@ export class Users extends Model<
   declare setOrganizations: BelongsToSetAssociationMixin<Organizations, string>;
   declare getCampus: BelongsToGetAssociationMixin<Campuses>;
   declare setCampus: BelongsToSetAssociationMixin<Campuses, string>;
+  declare getSchool: BelongsToGetAssociationMixin<Schools>;
+  declare setSchool: BelongsToSetAssociationMixin<Schools, string>;
   declare getAvatar: HasManyGetAssociationsMixin<File>;
   declare setAvatar: HasManySetAssociationsMixin<File, string>;
   declare getCreatedBy: BelongsToGetAssociationMixin<Users>;
@@ -148,6 +153,14 @@ export class Users extends Model<
       constraints: false,
     });
 
+    db.users.belongsTo(db.schools, {
+      as: 'school',
+      foreignKey: {
+        name: 'schoolId',
+      },
+      constraints: false,
+    });
+
     db.users.hasMany(db.file, {
       as: 'avatar',
       foreignKey: 'belongsToId',
@@ -238,6 +251,7 @@ export default function (sequelize: Sequelize): typeof Users {
       },
       organizationId: { type: DataTypes.UUID, allowNull: true },
       campusId: { type: DataTypes.UUID, allowNull: true },
+      schoolId: { type: DataTypes.UUID, allowNull: true },
       createdById: { type: DataTypes.UUID, allowNull: true },
       updatedById: { type: DataTypes.UUID, allowNull: true },
       createdAt: { type: DataTypes.DATE },
diff --git a/backend/src/db/seeders/20200430130760-user-roles.ts b/backend/src/db/seeders/20200430130760-user-roles.ts
index e82e6a6..2f0b33a 100644
--- a/backend/src/db/seeders/20200430130760-user-roles.ts
+++ b/backend/src/db/seeders/20200430130760-user-roles.ts
@@ -11,6 +11,7 @@ import {
   MODULE_READ_INSTRUCTIONAL,
   MODULE_READ_PARENT_COMM,
   MODULE_READ_EXTERNAL,
+  MODULE_READ_DIRECTOR,
   MODULE_ACTIONS,
   MODULE_PERMISSIONS,
 } from '@/shared/constants/product-permissions';
@@ -45,15 +46,19 @@ const PERMISSION_ENTITIES = [
 const CRUD_VERBS = ['CREATE', 'READ', 'UPDATE', 'DELETE'];
 const EXTRA_PERMISSIONS = ['READ_API_DOCS', 'CREATE_SEARCH'];
 
-/** Roles granted every permission (full CRUD within their tenant/campus scope). */
+/** Roles granted every permission (full CRUD within their tenant/scope). */
 const FULL_ACCESS_ROLES: readonly RoleName[] = [
   ROLE_NAMES.OWNER,
   ROLE_NAMES.SUPERINTENDENT,
+  // School head: full access, constrained to the school by tenant scoping.
+  ROLE_NAMES.PRINCIPAL,
   ROLE_NAMES.DIRECTOR,
 ];
 
 /** Roles granted read-only access to tenant resources. */
 const READ_ONLY_ROLES: readonly RoleName[] = [
+  // Registrar: the Principal's read-only/audit assistant (school-wide visibility).
+  ROLE_NAMES.REGISTRAR,
   ROLE_NAMES.OFFICE_MANAGER,
   ROLE_NAMES.TEACHER,
   ROLE_NAMES.SUPPORT_STAFF,
@@ -77,6 +82,16 @@ const EXTERNAL_ROLES: readonly RoleName[] = [
  * `student`/`guardian` get only the external pages.
  */
 const MODULE_PERMISSIONS_BY_ROLE: Partial<Record<RoleName, readonly string[]>> = {
+  // Registrar: read every product surface across the school for audit, but no
+  // action permissions (no fill-attendance/quiz/ack/zone, no audio manage).
+  [ROLE_NAMES.REGISTRAR]: [
+    ...MODULE_READ_ALL_STAFF,
+    ...MODULE_READ_INSTRUCTIONAL,
+    ...MODULE_READ_PARENT_COMM,
+    ...MODULE_READ_EXTERNAL,
+    ...MODULE_READ_DIRECTOR,
+    'READ_AUDIO_FILES',
+  ],
   [ROLE_NAMES.OFFICE_MANAGER]: [
     ...MODULE_READ_ALL_STAFF,
     ...MODULE_READ_EXTERNAL,
diff --git a/backend/src/db/seeders/20260610020000-rbac-fixtures.ts b/backend/src/db/seeders/20260610020000-rbac-fixtures.ts
index 8fbce3c..fe8f7da 100644
--- a/backend/src/db/seeders/20260610020000-rbac-fixtures.ts
+++ b/backend/src/db/seeders/20260610020000-rbac-fixtures.ts
@@ -12,17 +12,24 @@ import {
   SEED_ORGANIZATION_2_NAME,
   SEED_SECONDARY_OWNER,
   SEED_CAMPUS_ID,
+  SEED_SCHOOL_ID,
+  SEED_SCHOOL_NAME,
+  SEED_SCHOOL_2_ID,
+  SEED_SCHOOL_2_NAME,
+  SEED_SCHOOL_CAMPUS_IDS,
   SEED_FIXTURE_USERS,
 } from '@/shared/constants/seed-fixtures';
 import { PRODUCT_CAMPUS_SEED_ROWS } from '@/shared/constants/campuses';
 import type { Organizations } from '@/db/models/organizations';
+import type { Schools } from '@/db/models/schools';
 import type { Staff } from '@/db/models/staff';
 
 /**
- * RBAC fixture links (Workstream 4): one company that owns the seeded campuses,
- * the per-role users tied to the company/campus, and staff profiles covering
- * every campus staff role on the `tigers` campus. Runs after the user and role
- * seeders. Idempotent and reversible.
+ * RBAC fixture links (Workstream 4): one company that owns two schools and the
+ * seeded campuses (each campus assigned to one school), the per-role users tied
+ * to the org/school/campus, and staff profiles covering every campus staff role
+ * on the `tigers` campus. Runs after the user and role seeders. Idempotent and
+ * reversible.
  */
 const campusIds = PRODUCT_CAMPUS_SEED_ROWS.map((campus) => campus.id);
 const staffFixtures = SEED_FIXTURE_USERS.filter((user) => user.staffType);
@@ -63,19 +70,46 @@ export default {
       },
     );
 
-    // 2. The company owns the seeded campuses.
+    // 2. The two schools under the primary company (idempotent).
+    const schoolSeeds: CreationAttributes<Schools>[] = [
+      { id: SEED_SCHOOL_ID, name: SEED_SCHOOL_NAME, code: 'north', active: true, organizationId: SEED_ORGANIZATION_ID, createdAt, updatedAt },
+      { id: SEED_SCHOOL_2_ID, name: SEED_SCHOOL_2_NAME, code: 'south', active: true, organizationId: SEED_ORGANIZATION_ID, createdAt, updatedAt },
+    ];
+    const existingSchools = await queryInterface.sequelize.query<{ id: string }>(
+      `SELECT id FROM schools WHERE id IN (:ids)`,
+      {
+        replacements: { ids: schoolSeeds.map((s) => s.id) },
+        type: QueryTypes.SELECT,
+      },
+    );
+    const existingSchoolIds = new Set(existingSchools.map((row) => row.id));
+    const schoolsToInsert = schoolSeeds.filter(
+      (s) => !existingSchoolIds.has(s.id as string),
+    );
+    if (schoolsToInsert.length > 0) {
+      await queryInterface.bulkInsert('schools', schoolsToInsert);
+    }
+
+    // 3. The company owns the seeded campuses; each campus belongs to one school.
     await queryInterface.sequelize.query(
       `UPDATE "campuses" SET "organizationId" = :org WHERE "id" IN (:ids)`,
       { replacements: { org: SEED_ORGANIZATION_ID, ids: campusIds } },
     );
+    for (const [schoolId, ids] of Object.entries(SEED_SCHOOL_CAMPUS_IDS)) {
+      await queryInterface.sequelize.query(
+        `UPDATE "campuses" SET "schoolId" = :school WHERE "id" IN (:ids)`,
+        { replacements: { school: schoolId, ids: [...ids] } },
+      );
+    }
 
-    // 3. Tie each fixture user to the company/campus per its scope.
+    // 4. Tie each fixture user to the org/school/campus per its scope.
     for (const user of SEED_FIXTURE_USERS) {
       await queryInterface.sequelize.query(
-        `UPDATE "users" SET "organizationId" = :org, "campusId" = :campus WHERE "id" = :id`,
+        `UPDATE "users" SET "organizationId" = :org, "schoolId" = :school, "campusId" = :campus WHERE "id" = :id`,
         {
           replacements: {
             org: user.organization ? SEED_ORGANIZATION_ID : null,
+            school: user.school ? SEED_SCHOOL_ID : null,
             campus: user.campus ? SEED_CAMPUS_ID : null,
             id: user.id,
           },
@@ -83,7 +117,7 @@ export default {
       );
     }
 
-    // 4. Staff profiles for the campus staff roles (idempotent by userId).
+    // 5. Staff profiles for the campus staff roles (idempotent by userId).
     const existingStaff = await queryInterface.sequelize.query<{
       userId: string;
     }>(`SELECT "userId" FROM staff WHERE "userId" IN (:ids)`, {
@@ -100,6 +134,7 @@ export default {
         staff_type: user.staffType ?? null,
         status: 'active',
         organizationId: SEED_ORGANIZATION_ID,
+        schoolId: user.school ? SEED_SCHOOL_ID : null,
         campusId: SEED_CAMPUS_ID,
         userId: user.id,
         createdAt,
@@ -118,7 +153,7 @@ export default {
       {},
     );
     await queryInterface.sequelize.query(
-      `UPDATE "users" SET "organizationId" = NULL, "campusId" = NULL WHERE "id" IN (:ids)`,
+      `UPDATE "users" SET "organizationId" = NULL, "schoolId" = NULL, "campusId" = NULL WHERE "id" IN (:ids)`,
       {
         replacements: {
           ids: [
@@ -129,9 +164,14 @@ export default {
       },
     );
     await queryInterface.sequelize.query(
-      `UPDATE "campuses" SET "organizationId" = NULL WHERE "id" IN (:ids)`,
+      `UPDATE "campuses" SET "organizationId" = NULL, "schoolId" = NULL WHERE "id" IN (:ids)`,
       { replacements: { ids: campusIds } },
     );
+    await queryInterface.bulkDelete(
+      'schools',
+      { id: { [Op.in]: [SEED_SCHOOL_ID, SEED_SCHOOL_2_ID] } },
+      {},
+    );
     await queryInterface.bulkDelete(
       'organizations',
       { id: { [Op.in]: [SEED_ORGANIZATION_ID, SEED_ORGANIZATION_2_ID] } },
diff --git a/backend/src/services/campus_attendance.ts b/backend/src/services/campus_attendance.ts
index cdcb949..755ee1e 100644
--- a/backend/src/services/campus_attendance.ts
+++ b/backend/src/services/campus_attendance.ts
@@ -1,5 +1,5 @@
 import { clampLimit, requiredIsoDate } from '@/services/shared/validate';
-import { Op } from 'sequelize';
+import { Op, literal } from 'sequelize';
 import db from '@/db/models';
 import { withTransaction } from '@/db/with-transaction';
 import ForbiddenError from '@/shared/errors/forbidden';
@@ -8,9 +8,9 @@ import {
   CAMPUS_ATTENDANCE_DEFAULT_LIMIT,
   CAMPUS_ATTENDANCE_MANAGER_ROLE_NAMES,
   CAMPUS_ATTENDANCE_MAX_LIMIT,
-  CAMPUS_ATTENDANCE_TENANT_WIDE_ROLE_NAMES,
   normalizeCampusKey,
 } from '@/shared/constants/campus-attendance';
+import { ROLE_SCOPES } from '@/shared/constants/roles';
 import { resolvePagination } from '@/shared/constants/pagination';
 import type { CampusAttendanceConfig } from '@/db/models/campus_attendance_config';
 import type { CampusAttendanceSummaries } from '@/db/models/campus_attendance_summaries';
@@ -23,12 +23,19 @@ import type {
 import {
   assertAuthenticatedTenantUser,
   getCampusId,
+  getRoleScope,
+  getSchoolId,
+  hasGlobalAccess,
   hasRoleAccess,
   requireOrganizationId,
   requireUserId,
   getDisplayName,
 } from '@/services/shared/access';
 
+/** UUIDs are inlined into a SQL literal subquery; reject anything that is not one. */
+const CA_UUID_RE =
+  /^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$/;
+
 function getCurrentUserCampusKey(currentUser?: CurrentUser): string | null {
   const staff = currentUser?.staff_user;
   const staffProfile = Array.isArray(staff) ? staff[0] : null;
@@ -66,16 +73,74 @@ function campusKeyFromRoute(value: unknown): string {
   return campusKey;
 }
 
-function assertCanAccessCampusKey(
+/** True for roles whose reach is the whole organization (global + org scope). */
+function isOrgWide(currentUser?: CurrentUser): boolean {
+  return (
+    hasGlobalAccess(currentUser) ||
+    getRoleScope(currentUser) === ROLE_SCOPES.ORGANIZATION
+  );
+}
+
+/**
+ * Subquery of the campus_keys a school owns. `campus_key` is the normalized
+ * campus code, and the seeded product codes are already lowercase slugs, so
+ * `LOWER("code")` matches the stored key. Inlines a validated UUID only.
+ */
+function schoolCampusKeySubquery(schoolId: string) {
+  if (!CA_UUID_RE.test(schoolId)) {
+    throw new ForbiddenError();
+  }
+  return literal(
+    `(SELECT LOWER("code") FROM "campuses" WHERE "schoolId" = '${schoolId}' AND "deletedAt" IS NULL)`,
+  );
+}
+
+/** Whether `campusKey` belongs to a campus in the user's school (parameterized). */
+async function isCampusKeyInSchool(
+  campusKey: string,
+  schoolId: string,
+  organizationId: string,
+): Promise<boolean> {
+  const count = await db.campuses.count({
+    where: {
+      schoolId,
+      organizationId,
+      [Op.and]: [
+        db.sequelize.where(
+          db.sequelize.fn('LOWER', db.sequelize.col('code')),
+          campusKey,
+        ),
+      ],
+    },
+  });
+  return count > 0;
+}
+
+/** Asserts the user may read/write the given campus_key, by scope tier. */
+async function assertCanAccessCampusKey(
   campusKey: string,
   currentUser?: CurrentUser,
-): void {
-  if (hasRoleAccess(currentUser, CAMPUS_ATTENDANCE_TENANT_WIDE_ROLE_NAMES)) {
+): Promise<void> {
+  if (isOrgWide(currentUser)) {
     return;
   }
 
-  const currentCampusKey = getCurrentUserCampusKey(currentUser);
+  if (getRoleScope(currentUser) === ROLE_SCOPES.SCHOOL) {
+    const schoolId = getSchoolId(currentUser);
+    if (
+      schoolId &&
+      (await isCampusKeyInSchool(
+        campusKey,
+        schoolId,
+        requireOrganizationId(currentUser),
+      ))
+    ) {
+      return;
+    }
+    throw new ForbiddenError();
+  }
 
+  const currentCampusKey = getCurrentUserCampusKey(currentUser);
   if (currentCampusKey && currentCampusKey === campusKey) {
     return;
   }
@@ -83,22 +148,31 @@ function assertCanAccessCampusKey(
   throw new ForbiddenError();
 }
 
-/** Resolves the campus_key scope, asserting access along the way. */
-function campusScope(
+/** Resolves the campus_key scope by tier, asserting access along the way. */
+async function campusScope(
   filter: CampusAttendanceFilter,
   currentUser?: CurrentUser,
-): { campus_key?: string } {
+): Promise<{ campus_key?: string | { [Op.in]: ReturnType<typeof literal> } }> {
   const requestedCampusKey = normalizeCampusKey(filter?.campusKey);
 
   if (requestedCampusKey) {
-    assertCanAccessCampusKey(requestedCampusKey, currentUser);
+    await assertCanAccessCampusKey(requestedCampusKey, currentUser);
     return { campus_key: requestedCampusKey };
   }
 
-  if (hasRoleAccess(currentUser, CAMPUS_ATTENDANCE_TENANT_WIDE_ROLE_NAMES)) {
+  if (isOrgWide(currentUser)) {
     return {};
   }
 
+  // School roles (Principal/Registrar): every campus in their school.
+  if (getRoleScope(currentUser) === ROLE_SCOPES.SCHOOL) {
+    const schoolId = getSchoolId(currentUser);
+    if (!schoolId) {
+      throw new ForbiddenError();
+    }
+    return { campus_key: { [Op.in]: schoolCampusKeySubquery(schoolId) } };
+  }
+
   const currentCampusKey = getCurrentUserCampusKey(currentUser);
 
   if (!currentCampusKey) {
@@ -222,7 +296,7 @@ class CampusAttendanceService {
     const result = await db.campus_attendance_config.findAndCountAll({
       where: {
         organizationId: requireOrganizationId(currentUser),
-        ...campusScope(filter, currentUser),
+        ...(await campusScope(filter, currentUser)),
       },
       order: [['campus_key', 'asc']],
       limit,
@@ -243,7 +317,7 @@ class CampusAttendanceService {
     assertCanManageCampusAttendance(currentUser);
 
     const campusKey = campusKeyFromRoute(campusKeyParam);
-    assertCanAccessCampusKey(campusKey, currentUser);
+    await assertCanAccessCampusKey(campusKey, currentUser);
 
     if (!data || typeof data !== 'object' || Array.isArray(data)) {
       throw new ValidationError();
@@ -285,7 +359,7 @@ class CampusAttendanceService {
     const result = await db.campus_attendance_summaries.findAndCountAll({
       where: {
         organizationId: requireOrganizationId(currentUser),
-        ...campusScope(filter, currentUser),
+        ...(await campusScope(filter, currentUser)),
         ...dateRange(filter),
       },
       limit: clampLimit(filter.limit, CAMPUS_ATTENDANCE_DEFAULT_LIMIT, CAMPUS_ATTENDANCE_MAX_LIMIT),
@@ -311,7 +385,7 @@ class CampusAttendanceService {
 
     const campusKey = campusKeyFromRoute(campusKeyParam);
     const attendanceDate = requiredIsoDate(dateParam);
-    assertCanAccessCampusKey(campusKey, currentUser);
+    await assertCanAccessCampusKey(campusKey, currentUser);
 
     const validatedSummary = validateSummary(data);
     const payload = {
diff --git a/backend/src/services/communications.ts b/backend/src/services/communications.ts
index ce08b6c..b890aab 100644
--- a/backend/src/services/communications.ts
+++ b/backend/src/services/communications.ts
@@ -6,7 +6,7 @@ import ForbiddenError from '@/shared/errors/forbidden';
 import ValidationError from '@/shared/errors/validation';
 import {
   assertAuthenticatedTenantUser,
-  campusScope,
+  campusDimensionScope,
   getCampusId,
   getOrganizationId,
   getOrganizationIdOrGlobal,
@@ -23,7 +23,6 @@ import {
   COMMUNICATION_MANAGER_ROLE_NAMES,
   COMMUNICATION_RECIPIENT_TYPES,
   COMMUNICATION_STATUSES,
-  COMMUNICATION_TENANT_WIDE_ROLE_NAMES,
   DEFAULT_PARENT_MESSAGE_CATEGORY,
   PARENT_MESSAGE_CATEGORY_VALUES,
   type ParentMessageCategory,
@@ -165,7 +164,7 @@ class CommunicationsService {
         ...orgFilter,
         ...createdByFilter,
         audience: COMMUNICATION_AUDIENCES.GUARDIANS,
-        ...campusScope(currentUser, COMMUNICATION_TENANT_WIDE_ROLE_NAMES),
+        ...campusDimensionScope(currentUser),
         ...(filter.category ? { subject: filter.category } : {}),
       },
       include: [
@@ -259,7 +258,7 @@ class CommunicationsService {
     const result = await db.communication_events.findAndCountAll({
       where: {
         ...orgFilter,
-        ...campusScope(currentUser, COMMUNICATION_TENANT_WIDE_ROLE_NAMES),
+        ...campusDimensionScope(currentUser),
         ...(filter.type ? { event_type: filter.type } : {}),
       },
       order: [
diff --git a/backend/src/services/personality_quiz_results.ts b/backend/src/services/personality_quiz_results.ts
index 8b90b71..e633fef 100644
--- a/backend/src/services/personality_quiz_results.ts
+++ b/backend/src/services/personality_quiz_results.ts
@@ -1,3 +1,4 @@
+import { Op } from 'sequelize';
 import db from '@/db/models';
 import { withTransaction } from '@/db/with-transaction';
 import ForbiddenError from '@/shared/errors/forbidden';
@@ -6,6 +7,7 @@ import {
   getOrganizationIdOrGlobal,
   getCampusId,
   assertAuthenticatedTenantUser,
+  campusDimensionScope,
   hasRoleAccess,
 } from '@/services/shared/access';
 import { PERSONALITY_REPORT_ROLE_NAMES } from '@/shared/constants/personality';
@@ -152,7 +154,12 @@ class PersonalityQuizResultsService {
       ],
       where: {
         ...orgFilter,
-        ...(filter.campusId ? { campusId: filter.campusId } : {}),
+        // School/campus isolation; an explicit campusId filter is intersected
+        // (Op.and) with the scope so a school role cannot read another school.
+        [Op.and]: [
+          campusDimensionScope(currentUser),
+          ...(filter.campusId ? [{ campusId: filter.campusId }] : []),
+        ],
       },
       group: ['personality_type'],
       order: [[db.sequelize.fn('COUNT', db.sequelize.col('id')), 'desc']],
diff --git a/backend/src/services/safety_quiz_results.ts b/backend/src/services/safety_quiz_results.ts
index 6abdeff..120a907 100644
--- a/backend/src/services/safety_quiz_results.ts
+++ b/backend/src/services/safety_quiz_results.ts
@@ -6,6 +6,7 @@ import {
   getOrganizationIdOrGlobal,
   getCampusId,
   assertAuthenticatedTenantUser,
+  campusDimensionScope,
   hasRoleAccess,
   getDisplayName,
 } from '@/services/shared/access';
@@ -90,7 +91,7 @@ class SafetyQuizResultsService {
       where: {
         ...orgFilter,
         ...(hasRoleAccess(currentUser, SAFETY_QUIZ_REPORT_ROLE_NAMES)
-          ? {}
+          ? campusDimensionScope(currentUser)
           : { userId: currentUser?.id ?? null }),
         ...(filter.week_of ? { week_of: filter.week_of } : {}),
       },
diff --git a/backend/src/services/shared/access.ts b/backend/src/services/shared/access.ts
index 1af35b3..ffe120c 100644
--- a/backend/src/services/shared/access.ts
+++ b/backend/src/services/shared/access.ts
@@ -1,6 +1,12 @@
+import { Op, literal } from 'sequelize';
 import ForbiddenError from '@/shared/errors/forbidden';
+import { ROLE_SCOPES } from '@/shared/constants/roles';
 import type { CurrentUser } from '@/db/api/types';
 
+/** UUIDs are inlined into a SQL literal subquery; reject anything that is not one. */
+const UUID_RE =
+  /^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$/;
+
 /**
  * Shared tenant/role access helpers used by the feature services. Centralizes
  * the (previously copy-pasted) organization/campus/role checks so every module
@@ -19,6 +25,21 @@ export function getCampusId(currentUser?: CurrentUser): string | null {
   return currentUser?.campusId || null;
 }
 
+export function getSchoolId(currentUser?: CurrentUser): string | null {
+  const staff = currentUser?.staff_user;
+  if (Array.isArray(staff) && staff[0]?.schoolId) {
+    return staff[0].schoolId;
+  }
+  return currentUser?.schoolId || null;
+}
+
+/** The authorization scope of the user's role (`roles.scope`), if loaded. */
+export function getRoleScope(
+  currentUser?: CurrentUser,
+): string | null | undefined {
+  return currentUser?.app_role?.scope;
+}
+
 export function getRoleName(
   currentUser?: CurrentUser,
 ): string | null | undefined {
@@ -108,3 +129,57 @@ export function campusScope(
   const campusId = getCampusId(currentUser);
   return campusId ? { campusId } : {};
 }
+
+/** Campus-dimension constraint for a campus-bearing table, keyed by scope. */
+export type CampusDimensionScope = {
+  campusId?: string | { [Op.in]: ReturnType<typeof literal> };
+};
+
+/**
+ * The campus-dimension filter for the current user, derived from the role's
+ * authorization scope (`roles.scope`) instead of per-feature "tenant-wide"
+ * lists. ANDs together with the organization filter the caller already applies:
+ *
+ * - global / organization scope → `{}` (no campus narrowing; whole organization)
+ * - school scope (Principal/Registrar) → `campusId IN (campuses of the user's
+ *   school)`, enforcing hard isolation between schools
+ * - campus scope (Director/office_manager/teacher/support_staff) → `{ campusId }`
+ *
+ * Only valid for tables that carry a `campusId`. For school scope the campus set
+ * is resolved with a correlated subquery so no extra round-trip or denormalized
+ * `schoolId` column is needed (a campus belongs to exactly one school).
+ */
+export function campusDimensionScope(
+  currentUser?: CurrentUser,
+): CampusDimensionScope {
+  if (hasGlobalAccess(currentUser)) {
+    return {};
+  }
+
+  const scope = getRoleScope(currentUser);
+
+  if (scope === ROLE_SCOPES.SCHOOL) {
+    const schoolId = getSchoolId(currentUser);
+    if (!schoolId) {
+      return {};
+    }
+    if (!UUID_RE.test(schoolId)) {
+      throw new ForbiddenError();
+    }
+    return {
+      campusId: {
+        [Op.in]: literal(
+          `(SELECT "id" FROM "campuses" WHERE "schoolId" = '${schoolId}' AND "deletedAt" IS NULL)`,
+        ),
+      },
+    };
+  }
+
+  if (scope === ROLE_SCOPES.CAMPUS) {
+    const campusId = getCampusId(currentUser);
+    return campusId ? { campusId } : {};
+  }
+
+  // organization / external / guest: no campus-dimension narrowing here.
+  return {};
+}
diff --git a/backend/src/services/shared/role-policy.ts b/backend/src/services/shared/role-policy.ts
index 5a53deb..86ed3a7 100644
--- a/backend/src/services/shared/role-policy.ts
+++ b/backend/src/services/shared/role-policy.ts
@@ -16,28 +16,39 @@ const ALL_ROLE_NAMES: readonly RoleName[] = Object.values(ROLE_NAMES);
  * The roles each actor may create, re-assign, or delete on another user:
  * - `super_admin`: anyone.
  * - `system_admin`: anyone except `super_admin` / `system_admin`.
- * - `owner`: org/campus/external roles (not the system roles, not another owner).
+ * - `owner`: org/school/campus/external roles (not the system roles, not another owner).
  * - `superintendent`: not `owner` / `superintendent` (per spec).
- * - `director`: campus + external roles only (not director/superintendent/owner/admins).
+ * - `principal`: all of the school's staff (registrar + director + campus roles +
+ *   external), not org/system roles nor another principal.
+ * - `registrar`: nobody (read-only/audit assistant).
+ * - `director`: campus + external roles only (not director/principal/superintendent/owner/admins).
  * - everyone else: nobody.
  */
 const MANAGEABLE_ROLES_BY_ACTOR: Record<RoleName, readonly RoleName[]> = {
   [ROLE_NAMES.SUPER_ADMIN]: ALL_ROLE_NAMES,
   [ROLE_NAMES.SYSTEM_ADMIN]: [
-    ROLE_NAMES.OWNER, ROLE_NAMES.SUPERINTENDENT, ROLE_NAMES.DIRECTOR,
-    ROLE_NAMES.OFFICE_MANAGER, ROLE_NAMES.TEACHER, ROLE_NAMES.SUPPORT_STAFF,
-    ROLE_NAMES.STUDENT, ROLE_NAMES.GUARDIAN, ROLE_NAMES.GUEST,
-  ],
-  [ROLE_NAMES.OWNER]: [
-    ROLE_NAMES.SUPERINTENDENT, ROLE_NAMES.DIRECTOR, ROLE_NAMES.OFFICE_MANAGER,
+    ROLE_NAMES.OWNER, ROLE_NAMES.SUPERINTENDENT, ROLE_NAMES.PRINCIPAL,
+    ROLE_NAMES.REGISTRAR, ROLE_NAMES.DIRECTOR, ROLE_NAMES.OFFICE_MANAGER,
     ROLE_NAMES.TEACHER, ROLE_NAMES.SUPPORT_STAFF, ROLE_NAMES.STUDENT,
     ROLE_NAMES.GUARDIAN, ROLE_NAMES.GUEST,
   ],
-  [ROLE_NAMES.SUPERINTENDENT]: [
+  [ROLE_NAMES.OWNER]: [
+    ROLE_NAMES.SUPERINTENDENT, ROLE_NAMES.PRINCIPAL, ROLE_NAMES.REGISTRAR,
     ROLE_NAMES.DIRECTOR, ROLE_NAMES.OFFICE_MANAGER, ROLE_NAMES.TEACHER,
     ROLE_NAMES.SUPPORT_STAFF, ROLE_NAMES.STUDENT, ROLE_NAMES.GUARDIAN,
     ROLE_NAMES.GUEST,
   ],
+  [ROLE_NAMES.SUPERINTENDENT]: [
+    ROLE_NAMES.PRINCIPAL, ROLE_NAMES.REGISTRAR, ROLE_NAMES.DIRECTOR,
+    ROLE_NAMES.OFFICE_MANAGER, ROLE_NAMES.TEACHER, ROLE_NAMES.SUPPORT_STAFF,
+    ROLE_NAMES.STUDENT, ROLE_NAMES.GUARDIAN, ROLE_NAMES.GUEST,
+  ],
+  [ROLE_NAMES.PRINCIPAL]: [
+    ROLE_NAMES.REGISTRAR, ROLE_NAMES.DIRECTOR, ROLE_NAMES.OFFICE_MANAGER,
+    ROLE_NAMES.TEACHER, ROLE_NAMES.SUPPORT_STAFF, ROLE_NAMES.STUDENT,
+    ROLE_NAMES.GUARDIAN, ROLE_NAMES.GUEST,
+  ],
+  [ROLE_NAMES.REGISTRAR]: [],
   [ROLE_NAMES.DIRECTOR]: [
     ROLE_NAMES.OFFICE_MANAGER, ROLE_NAMES.TEACHER, ROLE_NAMES.SUPPORT_STAFF,
     ROLE_NAMES.STUDENT, ROLE_NAMES.GUARDIAN, ROLE_NAMES.GUEST,
diff --git a/backend/src/services/staff_attendance.ts b/backend/src/services/staff_attendance.ts
index 60bbba7..e0a51b5 100644
--- a/backend/src/services/staff_attendance.ts
+++ b/backend/src/services/staff_attendance.ts
@@ -6,12 +6,11 @@ import {
   STAFF_ATTENDANCE_MAX_LIMIT,
   STAFF_ATTENDANCE_REPORT_ROLE_NAMES,
   STAFF_ATTENDANCE_STATUSES,
-  STAFF_ATTENDANCE_TENANT_WIDE_ROLE_NAMES,
 } from '@/shared/constants/staff-attendance';
 import { STAFF_STATUSES } from '@/shared/constants/staff';
 import {
   assertAuthenticatedTenantUser,
-  campusScope,
+  campusDimensionScope,
   hasRoleAccess,
   requireOrganizationId,
   requireUserId,
@@ -25,15 +24,17 @@ interface StaffAttendanceFilter {
   limit?: unknown;
 }
 
-/** Restricts records to the staff member, their campus, or the whole tenant. */
-function visibilityScope(
-  currentUser?: CurrentUser,
-): { userId?: string; campusId?: string } {
+/**
+ * Restricts records to the staff member, or (for report roles) to the records
+ * their scope allows: org-wide for owner/superintendent, the school's campuses
+ * for principal/registrar, a single campus for director.
+ */
+function visibilityScope(currentUser?: CurrentUser) {
   if (!hasRoleAccess(currentUser, STAFF_ATTENDANCE_REPORT_ROLE_NAMES)) {
     return { userId: requireUserId(currentUser) };
   }
 
-  return campusScope(currentUser, STAFF_ATTENDANCE_TENANT_WIDE_ROLE_NAMES);
+  return campusDimensionScope(currentUser);
 }
 
 function dateFilter(filter: StaffAttendanceFilter): {
@@ -127,7 +128,7 @@ class StaffAttendanceService {
         where: {
           organizationId: requireOrganizationId(currentUser),
           status: STAFF_STATUSES.ACTIVE,
-          ...campusScope(currentUser, STAFF_ATTENDANCE_TENANT_WIDE_ROLE_NAMES),
+          ...campusDimensionScope(currentUser),
         },
       }),
     ]);
diff --git a/backend/src/services/walkthrough_checkins.ts b/backend/src/services/walkthrough_checkins.ts
index 85874b1..48a0267 100644
--- a/backend/src/services/walkthrough_checkins.ts
+++ b/backend/src/services/walkthrough_checkins.ts
@@ -4,11 +4,9 @@ import { withTransaction } from '@/db/with-transaction';
 import { resolvePagination } from '@/shared/constants/pagination';
 import ForbiddenError from '@/shared/errors/forbidden';
 import ValidationError from '@/shared/errors/validation';
+import { WALKTHROUGH_MANAGER_ROLE_NAMES } from '@/shared/constants/walkthrough';
 import {
-  WALKTHROUGH_MANAGER_ROLE_NAMES,
-  WALKTHROUGH_TENANT_WIDE_ROLE_NAMES,
-} from '@/shared/constants/walkthrough';
-import {
+  campusDimensionScope,
   getOrganizationIdOrGlobal,
   hasGlobalAccess,
   hasRoleAccess,
@@ -120,17 +118,6 @@ function toDto(record: WalkthroughCheckins) {
   };
 }
 
-/** Restricts non-tenant-wide roles to their own campus. Uses the module-local
- * `getCampusId` (staff-campus only), so it stays local. */
-function campusScope(currentUser?: CurrentUser): { campusId?: string } {
-  if (hasRoleAccess(currentUser, WALKTHROUGH_TENANT_WIDE_ROLE_NAMES)) {
-    return {};
-  }
-
-  const campusId = getCampusId(currentUser);
-  return campusId ? { campusId } : {};
-}
-
 class WalkthroughCheckinsService {
   static async list(filter: WalkthroughFilter, currentUser?: CurrentUser) {
     assertCanManage(currentUser);
@@ -142,7 +129,7 @@ class WalkthroughCheckinsService {
     const result = await db.walkthrough_checkins.findAndCountAll({
       where: {
         ...orgFilter,
-        ...campusScope(currentUser),
+        ...campusDimensionScope(currentUser),
         ...(filter.teacher_name ? { teacher_name: filter.teacher_name } : {}),
       },
       order: [
@@ -212,7 +199,7 @@ class WalkthroughCheckinsService {
       where: {
         id,
         ...orgFilter,
-        ...campusScope(currentUser),
+        ...campusDimensionScope(currentUser),
       },
     });
 
diff --git a/backend/src/shared/constants/campus-attendance.ts b/backend/src/shared/constants/campus-attendance.ts
index 8f549f7..a14bf61 100644
--- a/backend/src/shared/constants/campus-attendance.ts
+++ b/backend/src/shared/constants/campus-attendance.ts
@@ -1,14 +1,11 @@
 import { ROLE_NAMES } from './roles';
 
-export const CAMPUS_ATTENDANCE_TENANT_WIDE_ROLE_NAMES = Object.freeze([
+export const CAMPUS_ATTENDANCE_MANAGER_ROLE_NAMES = Object.freeze([
   ROLE_NAMES.SUPER_ADMIN,
   ROLE_NAMES.SYSTEM_ADMIN,
   ROLE_NAMES.OWNER,
-]);
-
-export const CAMPUS_ATTENDANCE_MANAGER_ROLE_NAMES = Object.freeze([
-  ...CAMPUS_ATTENDANCE_TENANT_WIDE_ROLE_NAMES,
   ROLE_NAMES.SUPERINTENDENT,
+  ROLE_NAMES.PRINCIPAL,
   ROLE_NAMES.DIRECTOR,
   ROLE_NAMES.OFFICE_MANAGER,
 ]);
diff --git a/backend/src/shared/constants/communications.ts b/backend/src/shared/constants/communications.ts
index fa46728..89454f9 100644
--- a/backend/src/shared/constants/communications.ts
+++ b/backend/src/shared/constants/communications.ts
@@ -49,12 +49,6 @@ export const COMMUNICATION_MANAGER_ROLE_NAMES = Object.freeze([
   ROLE_NAMES.SYSTEM_ADMIN,
   ROLE_NAMES.OWNER,
   ROLE_NAMES.SUPERINTENDENT,
+  ROLE_NAMES.PRINCIPAL,
   ROLE_NAMES.DIRECTOR,
 ]);
-
-export const COMMUNICATION_TENANT_WIDE_ROLE_NAMES = Object.freeze([
-  ROLE_NAMES.SUPER_ADMIN,
-  ROLE_NAMES.SYSTEM_ADMIN,
-  ROLE_NAMES.OWNER,
-  ROLE_NAMES.SUPERINTENDENT,
-]);
diff --git a/backend/src/shared/constants/content-catalog.ts b/backend/src/shared/constants/content-catalog.ts
index d736c2b..a0d9ff9 100644
--- a/backend/src/shared/constants/content-catalog.ts
+++ b/backend/src/shared/constants/content-catalog.ts
@@ -5,5 +5,6 @@ export const CONTENT_CATALOG_MANAGER_ROLE_NAMES = Object.freeze([
   ROLE_NAMES.SYSTEM_ADMIN,
   ROLE_NAMES.OWNER,
   ROLE_NAMES.SUPERINTENDENT,
+  ROLE_NAMES.PRINCIPAL,
   ROLE_NAMES.DIRECTOR,
 ]);
diff --git a/backend/src/shared/constants/frame.ts b/backend/src/shared/constants/frame.ts
index ef9bbc4..e52695d 100644
--- a/backend/src/shared/constants/frame.ts
+++ b/backend/src/shared/constants/frame.ts
@@ -5,5 +5,6 @@ export const FRAME_EDITOR_ROLE_NAMES = Object.freeze([
   ROLE_NAMES.SYSTEM_ADMIN,
   ROLE_NAMES.OWNER,
   ROLE_NAMES.SUPERINTENDENT,
+  ROLE_NAMES.PRINCIPAL,
   ROLE_NAMES.DIRECTOR,
 ]);
diff --git a/backend/src/shared/constants/personality.ts b/backend/src/shared/constants/personality.ts
index 51a22ac..7c72119 100644
--- a/backend/src/shared/constants/personality.ts
+++ b/backend/src/shared/constants/personality.ts
@@ -5,5 +5,7 @@ export const PERSONALITY_REPORT_ROLE_NAMES = Object.freeze([
   ROLE_NAMES.SYSTEM_ADMIN,
   ROLE_NAMES.OWNER,
   ROLE_NAMES.SUPERINTENDENT,
+  ROLE_NAMES.PRINCIPAL,
+  ROLE_NAMES.REGISTRAR,
   ROLE_NAMES.DIRECTOR,
 ]);
diff --git a/backend/src/shared/constants/roles.ts b/backend/src/shared/constants/roles.ts
index 2e2bfbc..d5a0adc 100644
--- a/backend/src/shared/constants/roles.ts
+++ b/backend/src/shared/constants/roles.ts
@@ -1,11 +1,14 @@
 /**
  * Authorization scope of a role (Workstream 3 §3.1). Determines the breadth of
- * a role's reach: platform-wide, a single organization, a single campus, the
- * external-user surface, or the unauthenticated guest. Stored on `roles.scope`.
+ * a role's reach: platform-wide, a single organization, a single school (all its
+ * campuses), a single campus, the external-user surface, or the unauthenticated
+ * guest. Stored on `roles.scope`. Hierarchy: SYSTEM ⊃ ORGANIZATION ⊃ SCHOOL ⊃
+ * CAMPUS.
  */
 export const ROLE_SCOPES = Object.freeze({
   SYSTEM: 'system',
   ORGANIZATION: 'organization',
+  SCHOOL: 'school',
   CAMPUS: 'campus',
   EXTERNAL: 'external',
   GUEST: 'guest',
@@ -18,16 +21,21 @@ export const ROLE_SCOPE_VALUES: readonly RoleScope[] = Object.freeze(
 );
 
 /**
- * The 11 first-class platform roles (Workstream 3 §3.1). The stored `roles.name`
+ * The 13 first-class platform roles (Workstream 3 §3.1). The stored `roles.name`
  * uses these stable machine values; `roles.scope` is the matching scope. `guest`
  * is the unauthenticated fallback (the seeded `Public` row), not an assignable
  * user role. `globalAccess` (system roles only) bypasses tenant filtering.
+ * `principal`/`registrar` are the school-tier roles (Organization → School →
+ * Campus): the Principal is the school head (full school access), the Registrar
+ * is the Principal's read-only/audit assistant.
  */
 export const ROLE_NAMES = Object.freeze({
   SUPER_ADMIN: 'super_admin',
   SYSTEM_ADMIN: 'system_admin',
   OWNER: 'owner',
   SUPERINTENDENT: 'superintendent',
+  PRINCIPAL: 'principal',
+  REGISTRAR: 'registrar',
   DIRECTOR: 'director',
   OFFICE_MANAGER: 'office_manager',
   TEACHER: 'teacher',
@@ -51,6 +59,8 @@ export const ROLE_DEFINITIONS: readonly RoleDefinition[] = Object.freeze([
   { name: ROLE_NAMES.SYSTEM_ADMIN, scope: ROLE_SCOPES.SYSTEM, globalAccess: true },
   { name: ROLE_NAMES.OWNER, scope: ROLE_SCOPES.ORGANIZATION, globalAccess: false },
   { name: ROLE_NAMES.SUPERINTENDENT, scope: ROLE_SCOPES.ORGANIZATION, globalAccess: false },
+  { name: ROLE_NAMES.PRINCIPAL, scope: ROLE_SCOPES.SCHOOL, globalAccess: false },
+  { name: ROLE_NAMES.REGISTRAR, scope: ROLE_SCOPES.SCHOOL, globalAccess: false },
   { name: ROLE_NAMES.DIRECTOR, scope: ROLE_SCOPES.CAMPUS, globalAccess: false },
   { name: ROLE_NAMES.OFFICE_MANAGER, scope: ROLE_SCOPES.CAMPUS, globalAccess: false },
   { name: ROLE_NAMES.TEACHER, scope: ROLE_SCOPES.CAMPUS, globalAccess: false },
diff --git a/backend/src/shared/constants/safety-quiz.ts b/backend/src/shared/constants/safety-quiz.ts
index 2223a94..fd98b49 100644
--- a/backend/src/shared/constants/safety-quiz.ts
+++ b/backend/src/shared/constants/safety-quiz.ts
@@ -5,5 +5,7 @@ export const SAFETY_QUIZ_REPORT_ROLE_NAMES = Object.freeze([
   ROLE_NAMES.SYSTEM_ADMIN,
   ROLE_NAMES.OWNER,
   ROLE_NAMES.SUPERINTENDENT,
+  ROLE_NAMES.PRINCIPAL,
+  ROLE_NAMES.REGISTRAR,
   ROLE_NAMES.DIRECTOR,
 ]);
diff --git a/backend/src/shared/constants/seed-fixtures.ts b/backend/src/shared/constants/seed-fixtures.ts
index 2034fb5..1abcd93 100644
--- a/backend/src/shared/constants/seed-fixtures.ts
+++ b/backend/src/shared/constants/seed-fixtures.ts
@@ -6,19 +6,37 @@ import {
 } from '@/shared/constants/users';
 
 /**
- * RBAC seed fixtures (Workstream 4): one company, one campus (the `tigers`
- * product campus), staff covering every campus role, and exactly one loginable
- * user per stored role. Single source shared by the admin-user seeder (creates
- * the users), the user-roles seeder (assigns roles), and the rbac-fixtures
- * seeder (org/campus/staff links). Pre-launch — reset the DB and reseed.
+ * RBAC seed fixtures (Workstream 4): one company, two schools, the six product
+ * campuses, staff covering every campus role, and exactly one loginable user per
+ * stored role. Single source shared by the admin-user seeder (creates the
+ * users), the user-roles seeder (assigns roles), and the rbac-fixtures seeder
+ * (org/school/campus/staff links). Pre-launch — reset the DB and reseed.
  */
 
 export const SEED_ORGANIZATION_ID = 'b1a7c0de-0000-4000-8000-000000000001';
 export const SEED_ORGANIZATION_NAME = 'Demo Academy';
 
+/**
+ * Two schools under the primary org (Organization → School → Campus). School 1
+ * (North) owns the first three campuses (incl. the `tigers` campus the fixture
+ * staff are on); School 2 (South) owns the rest — used to prove hard isolation
+ * between schools. Every campus belongs to exactly one school.
+ */
+export const SEED_SCHOOL_ID = 'b1a7c0de-0000-4000-8000-000000000031';
+export const SEED_SCHOOL_NAME = 'Demo Academy North';
+export const SEED_SCHOOL_2_ID = 'b1a7c0de-0000-4000-8000-000000000032';
+export const SEED_SCHOOL_2_NAME = 'Demo Academy South';
+
 /** The campus the fixture staff are assigned to (the seeded `tigers` campus). */
 export const SEED_CAMPUS_ID = PRODUCT_CAMPUS_SEED_ROWS[0].id;
 
+/** Campus → school assignment (campus belongs to exactly one school). */
+export const SEED_SCHOOL_CAMPUS_IDS: Readonly<Record<string, readonly string[]>> =
+  Object.freeze({
+    [SEED_SCHOOL_ID]: PRODUCT_CAMPUS_SEED_ROWS.slice(0, 3).map((c) => c.id),
+    [SEED_SCHOOL_2_ID]: PRODUCT_CAMPUS_SEED_ROWS.slice(3).map((c) => c.id),
+  });
+
 export type StaffType = 'teacher' | 'admin' | 'support';
 
 export interface SeedFixtureUser {
@@ -31,8 +49,10 @@ export interface SeedFixtureUser {
   readonly role: RoleName;
   /** Uses `SEED_ADMIN_PASSWORD` (system roles) vs `SEED_USER_PASSWORD`. */
   readonly admin: boolean;
-  /** Gets `organizationId` (org/campus/external roles; not the system roles). */
+  /** Gets `organizationId` (org/school/campus/external roles; not the system roles). */
   readonly organization: boolean;
+  /** Gets `schoolId` = `SEED_SCHOOL_ID` (school + campus + external roles in School 1). */
+  readonly school: boolean;
   /** Gets `campusId` (campus + external roles). */
   readonly campus: boolean;
   /** When set, a staff profile is created with this `staff_type`. */
@@ -40,16 +60,18 @@ export interface SeedFixtureUser {
 }
 
 export const SEED_FIXTURE_USERS: readonly SeedFixtureUser[] = [
-  { id: 'b1a7c0de-0000-4000-8000-000000000010', email: 'admin@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MR, firstName: 'Alex', lastName: 'Morgan', role: ROLE_NAMES.SUPER_ADMIN, admin: true, organization: false, campus: false },
-  { id: 'b1a7c0de-0000-4000-8000-000000000011', email: 'system_admin@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MS, firstName: 'Jordan', lastName: 'Chen', role: ROLE_NAMES.SYSTEM_ADMIN, admin: true, organization: false, campus: false },
-  { id: 'b1a7c0de-0000-4000-8000-000000000012', email: 'owner@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MRS, firstName: 'Patricia', lastName: 'Hayes', role: ROLE_NAMES.OWNER, admin: false, organization: true, campus: false },
-  { id: 'b1a7c0de-0000-4000-8000-000000000013', email: 'superintendent@flatlogic.com', namePrefix: USER_NAME_PREFIXES.DR, firstName: 'Michael', lastName: 'Torres', role: ROLE_NAMES.SUPERINTENDENT, admin: false, organization: true, campus: false },
-  { id: 'b1a7c0de-0000-4000-8000-000000000014', email: 'director@flatlogic.com', namePrefix: USER_NAME_PREFIXES.DR, firstName: 'Sarah', lastName: 'Williams', role: ROLE_NAMES.DIRECTOR, admin: false, organization: true, campus: true, staffType: 'admin' },
-  { id: 'b1a7c0de-0000-4000-8000-000000000015', email: 'office_manager@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MS, firstName: 'Lisa', lastName: 'Park', role: ROLE_NAMES.OFFICE_MANAGER, admin: false, organization: true, campus: true, staffType: 'admin' },
-  { id: 'b1a7c0de-0000-4000-8000-000000000016', email: 'teacher@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MRS, firstName: 'Emily', lastName: 'Johnson', role: ROLE_NAMES.TEACHER, admin: false, organization: true, campus: true, staffType: 'teacher' },
-  { id: 'b1a7c0de-0000-4000-8000-000000000017', email: 'support_staff@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MR, firstName: 'Marcus', lastName: 'Davis', role: ROLE_NAMES.SUPPORT_STAFF, admin: false, organization: true, campus: true, staffType: 'support' },
-  { id: 'b1a7c0de-0000-4000-8000-000000000018', email: 'student@flatlogic.com', firstName: 'Emma', lastName: 'Clark', role: ROLE_NAMES.STUDENT, admin: false, organization: true, campus: true },
-  { id: 'b1a7c0de-0000-4000-8000-000000000019', email: 'guardian@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MR, firstName: 'Robert', lastName: 'Clark', role: ROLE_NAMES.GUARDIAN, admin: false, organization: true, campus: true },
+  { id: 'b1a7c0de-0000-4000-8000-000000000010', email: 'admin@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MR, firstName: 'Alex', lastName: 'Morgan', role: ROLE_NAMES.SUPER_ADMIN, admin: true, organization: false, school: false, campus: false },
+  { id: 'b1a7c0de-0000-4000-8000-000000000011', email: 'system_admin@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MS, firstName: 'Jordan', lastName: 'Chen', role: ROLE_NAMES.SYSTEM_ADMIN, admin: true, organization: false, school: false, campus: false },
+  { id: 'b1a7c0de-0000-4000-8000-000000000012', email: 'owner@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MRS, firstName: 'Patricia', lastName: 'Hayes', role: ROLE_NAMES.OWNER, admin: false, organization: true, school: false, campus: false },
+  { id: 'b1a7c0de-0000-4000-8000-000000000013', email: 'superintendent@flatlogic.com', namePrefix: USER_NAME_PREFIXES.DR, firstName: 'Michael', lastName: 'Torres', role: ROLE_NAMES.SUPERINTENDENT, admin: false, organization: true, school: false, campus: false },
+  { id: 'b1a7c0de-0000-4000-8000-000000000021', email: 'principal@flatlogic.com', namePrefix: USER_NAME_PREFIXES.DR, firstName: 'Karen', lastName: 'Mitchell', role: ROLE_NAMES.PRINCIPAL, admin: false, organization: true, school: true, campus: false },
+  { id: 'b1a7c0de-0000-4000-8000-000000000022', email: 'registrar@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MS, firstName: 'Nicole', lastName: 'Adams', role: ROLE_NAMES.REGISTRAR, admin: false, organization: true, school: true, campus: false },
+  { id: 'b1a7c0de-0000-4000-8000-000000000014', email: 'director@flatlogic.com', namePrefix: USER_NAME_PREFIXES.DR, firstName: 'Sarah', lastName: 'Williams', role: ROLE_NAMES.DIRECTOR, admin: false, organization: true, school: true, campus: true, staffType: 'admin' },
+  { id: 'b1a7c0de-0000-4000-8000-000000000015', email: 'office_manager@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MS, firstName: 'Lisa', lastName: 'Park', role: ROLE_NAMES.OFFICE_MANAGER, admin: false, organization: true, school: true, campus: true, staffType: 'admin' },
+  { id: 'b1a7c0de-0000-4000-8000-000000000016', email: 'teacher@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MRS, firstName: 'Emily', lastName: 'Johnson', role: ROLE_NAMES.TEACHER, admin: false, organization: true, school: true, campus: true, staffType: 'teacher' },
+  { id: 'b1a7c0de-0000-4000-8000-000000000017', email: 'support_staff@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MR, firstName: 'Marcus', lastName: 'Davis', role: ROLE_NAMES.SUPPORT_STAFF, admin: false, organization: true, school: true, campus: true, staffType: 'support' },
+  { id: 'b1a7c0de-0000-4000-8000-000000000018', email: 'student@flatlogic.com', firstName: 'Emma', lastName: 'Clark', role: ROLE_NAMES.STUDENT, admin: false, organization: true, school: true, campus: true },
+  { id: 'b1a7c0de-0000-4000-8000-000000000019', email: 'guardian@flatlogic.com', namePrefix: USER_NAME_PREFIXES.MR, firstName: 'Robert', lastName: 'Clark', role: ROLE_NAMES.GUARDIAN, admin: false, organization: true, school: true, campus: true },
 ];
 
 /**
@@ -70,6 +92,7 @@ export const SEED_SECONDARY_OWNER: SeedFixtureUser = {
   role: ROLE_NAMES.OWNER,
   admin: false,
   organization: true,
+  school: false,
   campus: false,
 };
 
diff --git a/backend/src/shared/constants/staff-attendance.ts b/backend/src/shared/constants/staff-attendance.ts
index c9b3ee1..38c2ab7 100644
--- a/backend/src/shared/constants/staff-attendance.ts
+++ b/backend/src/shared/constants/staff-attendance.ts
@@ -11,14 +11,10 @@ export const STAFF_ATTENDANCE_REPORT_ROLE_NAMES = Object.freeze([
   ROLE_NAMES.SYSTEM_ADMIN,
   ROLE_NAMES.OWNER,
   ROLE_NAMES.SUPERINTENDENT,
+  ROLE_NAMES.PRINCIPAL,
+  ROLE_NAMES.REGISTRAR,
   ROLE_NAMES.DIRECTOR,
 ]);
 
-export const STAFF_ATTENDANCE_TENANT_WIDE_ROLE_NAMES = Object.freeze([
-  ROLE_NAMES.SUPER_ADMIN,
-  ROLE_NAMES.SYSTEM_ADMIN,
-  ROLE_NAMES.OWNER,
-]);
-
 export const STAFF_ATTENDANCE_DEFAULT_LIMIT = 90;
 export const STAFF_ATTENDANCE_MAX_LIMIT = 366;
diff --git a/backend/src/shared/constants/walkthrough.ts b/backend/src/shared/constants/walkthrough.ts
index f041ddb..3ad8c42 100644
--- a/backend/src/shared/constants/walkthrough.ts
+++ b/backend/src/shared/constants/walkthrough.ts
@@ -5,12 +5,6 @@ export const WALKTHROUGH_MANAGER_ROLE_NAMES = Object.freeze([
   ROLE_NAMES.SYSTEM_ADMIN,
   ROLE_NAMES.OWNER,
   ROLE_NAMES.SUPERINTENDENT,
+  ROLE_NAMES.PRINCIPAL,
   ROLE_NAMES.DIRECTOR,
 ]);
-
-export const WALKTHROUGH_TENANT_WIDE_ROLE_NAMES = Object.freeze([
-  ROLE_NAMES.SUPER_ADMIN,
-  ROLE_NAMES.SYSTEM_ADMIN,
-  ROLE_NAMES.OWNER,
-  ROLE_NAMES.SUPERINTENDENT,
-]);
diff --git a/frontend/docs/ui-kit.md b/frontend/docs/ui-kit.md
index db49d57..f2d03c3 100644
--- a/frontend/docs/ui-kit.md
+++ b/frontend/docs/ui-kit.md
@@ -31,6 +31,22 @@ Use `StatePanel` when a feature needs a standard loading, error, or empty block.
 
 Feature-specific wrapper components may stay in their module folder when they carry product copy or workflow-specific props. Those wrappers should delegate the repeated shell to `StatePanel`.
 
+## Loading States: PageSkeleton vs StatePanel
+
+There are two loading scopes, and they must not be mixed within one navigation:
+
+- **Page-scope load** — the whole page (or its primary content) is unavailable until the fetch resolves. Use `PageSkeleton` (`components/ui/page-skeleton.tsx`), early-returned from the page/wrapper. `ModuleRouteGuard` already renders the same `PageSkeleton` as the lazy-route Suspense fallback, so the chunk load and the data load read as **one continuous skeleton** instead of a skeleton that flips into a spinner. Do not use a `StatePanel` spinner for this.
+
+  ```tsx
+  if (page.isLoading) {
+    return <PageSkeleton />;
+  }
+  ```
+
+- **Local/section load** — the page chrome (header, filters, interactive controls) renders immediately and only a secondary region is still fetching. Keep a `StatePanel` spinner (or a `Button` busy state) scoped to that region. Examples: a results grid below interactive filters, a secondary compliance panel, a per-tab fetch.
+
+Rule of thumb: if loading hides everything behind a static header, it is page-scope → `PageSkeleton`. If interactive chrome is already usable while one area loads, it is local → `StatePanel`.
+
 ## Button Usage
 
 Use `Button` for new clickable commands. Prefer `leadingIcon`, `loading`, and `loadingLabel` instead of duplicating inline spinner branches.
@@ -58,7 +74,7 @@ Use `ModuleHeader` for repeated module-level title blocks with a square icon and
 ## Rules
 
 - Keep UI variants and class maps in dedicated non-component files.
-- Use `StatePanel` for repeated loading, error, and empty panels instead of copying Tailwind containers.
+- Use `StatePanel` for repeated error/empty panels and **local/section** loading; use `PageSkeleton` for **page-scope** loading so it stays continuous with the route Suspense fallback (see Loading States above).
 - Use existing `Button`, `Input`, `Textarea`, `Select`, and `Table` primitives for new view code.
 - Use `NativeSelect` for simple select fields where native browser behavior is sufficient.
 - Use `ModuleHeader` for repeated page/module headings instead of duplicating title/icon markup.
diff --git a/frontend/src/business/auth/selectors.ts b/frontend/src/business/auth/selectors.ts
index cf0bcdb..af80a5d 100644
--- a/frontend/src/business/auth/selectors.ts
+++ b/frontend/src/business/auth/selectors.ts
@@ -65,6 +65,10 @@ export function getAuthRoleLabel(role: UserRole): string {
       return 'Owner';
     case 'superintendent':
       return 'Superintendent';
+    case 'principal':
+      return 'Principal';
+    case 'registrar':
+      return 'Registrar';
     case 'director':
       return 'Director';
     case 'office_manager':
diff --git a/frontend/src/components/community-service/CommunityServiceView.tsx b/frontend/src/components/community-service/CommunityServiceView.tsx
index cdad0d5..d0cbefc 100644
--- a/frontend/src/components/community-service/CommunityServiceView.tsx
+++ b/frontend/src/components/community-service/CommunityServiceView.tsx
@@ -3,6 +3,7 @@ import { CommunityFilters } from '@/components/community-service/CommunityFilter
 import { CommunityResults } from '@/components/community-service/CommunityResults';
 import { CommunityServiceHeader } from '@/components/community-service/CommunityServiceHeader';
 import { CommunityStatsGrid } from '@/components/community-service/CommunityStatsGrid';
+import { PageSkeleton } from '@/components/ui/page-skeleton';
 import { StatePanel } from '@/components/ui/state-panel';
 
 interface CommunityServiceViewProps {
@@ -10,24 +11,23 @@ interface CommunityServiceViewProps {
 }
 
 export function CommunityServiceView({ workflow }: CommunityServiceViewProps) {
+  if (workflow.isLoading) {
+    return <PageSkeleton />;
+  }
+
   return (
     <div className="space-y-6">
       <CommunityServiceHeader />
-      {workflow.isLoading && (
-        <StatePanel tone="slate" loading>
-          Loading community organizations...
-        </StatePanel>
-      )}
       {workflow.error && (
         <StatePanel tone="red" role="alert">
           Community organizations could not be loaded from the backend.
         </StatePanel>
       )}
-      {!workflow.isLoading && !workflow.error && (
+      {!workflow.error && (
         <>
-      <CommunityFilters workflow={workflow} />
-      <CommunityStatsGrid workflow={workflow} />
-      <CommunityResults workflow={workflow} />
+          <CommunityFilters workflow={workflow} />
+          <CommunityStatsGrid workflow={workflow} />
+          <CommunityResults workflow={workflow} />
         </>
       )}
     </div>
diff --git a/frontend/src/components/director-dashboard/DirectorDashboardView.tsx b/frontend/src/components/director-dashboard/DirectorDashboardView.tsx
index 2857d53..d87b344 100644
--- a/frontend/src/components/director-dashboard/DirectorDashboardView.tsx
+++ b/frontend/src/components/director-dashboard/DirectorDashboardView.tsx
@@ -6,6 +6,7 @@ import { DirectorQuickActions } from '@/components/director-dashboard/DirectorQu
 import { DirectorQuizResultsPanel } from '@/components/director-dashboard/DirectorQuizResultsPanel';
 import { DirectorRecentFramePanel } from '@/components/director-dashboard/DirectorRecentFramePanel';
 import { DirectorRiskList } from '@/components/director-dashboard/DirectorRiskList';
+import { PageSkeleton } from '@/components/ui/page-skeleton';
 import { StatePanel } from '@/components/ui/state-panel';
 import { getOptionalErrorMessage } from '@/shared/errors/errorMessages';
 
@@ -21,11 +22,7 @@ export function DirectorDashboardView({
   const errorMessage = getOptionalErrorMessage(page.error);
 
   if (page.isLoading) {
-    return (
-      <StatePanel tone="violet" alignment="center" loading className="my-20">
-        Loading director dashboard...
-      </StatePanel>
-    );
+    return <PageSkeleton />;
   }
 
   if (errorMessage) {
diff --git a/frontend/src/components/frame/FrameStatusPanel.tsx b/frontend/src/components/frame/FrameStatusPanel.tsx
index bb0220f..86cf1c0 100644
--- a/frontend/src/components/frame/FrameStatusPanel.tsx
+++ b/frontend/src/components/frame/FrameStatusPanel.tsx
@@ -2,16 +2,6 @@ import { getOptionalErrorMessage } from '@/shared/errors/errorMessages';
 import { StatePanel } from '@/components/ui/state-panel';
 import type { FrameModuleViewProps } from '@/components/frame/types';
 
-export function FrameLoadingPanel() {
-  return (
-    <div className="flex items-center justify-center py-20">
-      <StatePanel tone="violet" alignment="center" loading className="border-0 bg-transparent p-0">
-        Loading F.R.A.M.E. entries...
-      </StatePanel>
-    </div>
-  );
-}
-
 export function FrameStatusPanel({ workflow }: FrameModuleViewProps) {
   const errorMessage = getOptionalErrorMessage(workflow.error);
 
diff --git a/frontend/src/components/frameworks/ClassroomTimer.tsx b/frontend/src/components/frameworks/ClassroomTimer.tsx
index 75a5065..ae9b9f3 100644
--- a/frontend/src/components/frameworks/ClassroomTimer.tsx
+++ b/frontend/src/components/frameworks/ClassroomTimer.tsx
@@ -6,6 +6,7 @@ import { TimerDisplay } from '@/components/classroom-timer/TimerDisplay';
 import { TimerProjectionView } from '@/components/classroom-timer/TimerProjectionView';
 import { TimerSettingsPanel } from '@/components/classroom-timer/TimerSettingsPanel';
 import { TimerTips } from '@/components/classroom-timer/TimerTips';
+import { PageSkeleton } from '@/components/ui/page-skeleton';
 import { StatePanel } from '@/components/ui/state-panel';
 import { getOptionalErrorMessage } from '@/shared/errors/errorMessages';
 import type { UserRole } from '@/shared/types/app';
@@ -19,11 +20,7 @@ const ClassroomTimer = ({ userRole }: ClassroomTimerProps) => {
   const contentErrorMessage = getOptionalErrorMessage(timer.state.contentError);
 
   if (timer.state.isContentLoading) {
-    return (
-      <StatePanel tone="cyan" loading>
-        Loading classroom timer content...
-      </StatePanel>
-    );
+    return <PageSkeleton />;
   }
 
   if (contentErrorMessage || !timer.state.selectedBackground || !timer.state.selectedSound) {
diff --git a/frontend/src/components/frameworks/FrameModule.tsx b/frontend/src/components/frameworks/FrameModule.tsx
index 073ae0a..2a24920 100644
--- a/frontend/src/components/frameworks/FrameModule.tsx
+++ b/frontend/src/components/frameworks/FrameModule.tsx
@@ -1,6 +1,6 @@
 import { useFrameModule } from '@/business/frame/hooks';
 import { FrameModuleView } from '@/components/frame/FrameModuleView';
-import { FrameLoadingPanel } from '@/components/frame/FrameStatusPanel';
+import { PageSkeleton } from '@/components/ui/page-skeleton';
 import type { UserRole } from '@/shared/types/app';
 
 interface FrameModuleProps {
@@ -12,7 +12,7 @@ const FrameModule = ({ userRole, userName }: FrameModuleProps) => {
   const workflow = useFrameModule(userRole, userName);
 
   if (workflow.isLoading) {
-    return <FrameLoadingPanel />;
+    return <PageSkeleton />;
   }
 
   return <FrameModuleView workflow={workflow} />;
diff --git a/frontend/src/components/personality-quiz/PersonalityQuizView.tsx b/frontend/src/components/personality-quiz/PersonalityQuizView.tsx
index b27a128..2383d27 100644
--- a/frontend/src/components/personality-quiz/PersonalityQuizView.tsx
+++ b/frontend/src/components/personality-quiz/PersonalityQuizView.tsx
@@ -2,6 +2,7 @@ import type { PersonalityQuizWorkflow } from '@/components/personality-quiz/type
 import { PersonalityQuizIntro } from '@/components/personality-quiz/PersonalityQuizIntro';
 import { PersonalityQuizQuestionView } from '@/components/personality-quiz/PersonalityQuizQuestionView';
 import { PersonalityResultView } from '@/components/personality-quiz/PersonalityResultView';
+import { PageSkeleton } from '@/components/ui/page-skeleton';
 import { StatePanel } from '@/components/ui/state-panel';
 
 interface PersonalityQuizViewProps {
@@ -18,11 +19,7 @@ export function PersonalityQuizView({
   isSaving,
 }: PersonalityQuizViewProps) {
   if (workflow.isContentLoading) {
-    return (
-      <StatePanel tone="violet" size="lg" alignment="center" loading>
-        Loading personality assessment...
-      </StatePanel>
-    );
+    return <PageSkeleton />;
   }
 
   if (workflow.contentError) {
diff --git a/frontend/src/components/safety-quiz/SafetyQuizView.tsx b/frontend/src/components/safety-quiz/SafetyQuizView.tsx
index 6e4e62d..e0bdd62 100644
--- a/frontend/src/components/safety-quiz/SafetyQuizView.tsx
+++ b/frontend/src/components/safety-quiz/SafetyQuizView.tsx
@@ -2,6 +2,7 @@ import { Shield } from 'lucide-react';
 
 import type { SafetyQuizPage } from '@/business/safety-quiz/types';
 import { ModuleHeader } from '@/components/ui/module-header';
+import { PageSkeleton } from '@/components/ui/page-skeleton';
 import { StatePanel } from '@/components/ui/state-panel';
 import { getOptionalErrorMessage } from '@/shared/errors/errorMessages';
 import { SafetyQuizCompliancePanel } from '@/components/safety-quiz/SafetyQuizCompliancePanel';
@@ -17,6 +18,12 @@ interface SafetyQuizViewProps {
 }
 
 export function SafetyQuizView({ page }: SafetyQuizViewProps) {
+  // Page-scope load: keep the route skeleton continuous instead of swapping to a
+  // spinner. The compliance panel keeps its own local spinner (secondary data).
+  if (page.isQuizLoading) {
+    return <PageSkeleton />;
+  }
+
   const quizConfigurationError = getSafetyQuizConfigurationError(page.quiz);
 
   return (
@@ -77,14 +84,6 @@ function SafetyQuizMainPanel({ page }: SafetyQuizMainPanelProps) {
   const quizConfigurationError = getSafetyQuizConfigurationError(quiz);
   const question = quiz?.questions[page.currentQuestionIndex] ?? null;
 
-  if (page.isQuizLoading) {
-    return (
-      <StatePanel tone="sky" alignment="center" loading className="bg-slate-800/40 backdrop-blur-sm rounded-2xl border-slate-700/40 py-16">
-        Loading safety quiz...
-      </StatePanel>
-    );
-  }
-
   if (quizErrorMessage) {
     return (
       <StatePanel tone="red" role="alert">
diff --git a/frontend/src/components/sign-in-modal/SignupRoleStep.tsx b/frontend/src/components/sign-in-modal/SignupRoleStep.tsx
index e14a5cc..8e3c812 100644
--- a/frontend/src/components/sign-in-modal/SignupRoleStep.tsx
+++ b/frontend/src/components/sign-in-modal/SignupRoleStep.tsx
@@ -17,7 +17,9 @@ const ROLE_OPTIONS: readonly {
   { value: 'teacher', label: 'Teacher', desc: 'Classroom educator', color: 'border-emerald-500/30 bg-emerald-500/10 text-emerald-400', icon: <PeopleIcon /> },
   { value: 'support_staff', label: 'Support Staff', desc: 'Paraprofessional', color: 'border-blue-500/30 bg-blue-500/10 text-blue-400', icon: <PeopleIcon /> },
   { value: 'office_manager', label: 'Office Manager', desc: 'Administrative staff', color: 'border-amber-500/30 bg-amber-500/10 text-amber-400', icon: <OfficeIcon /> },
+  { value: 'registrar', label: 'Registrar', desc: 'School records & audit', color: 'border-violet-500/30 bg-violet-500/10 text-violet-400', icon: <OfficeIcon /> },
   { value: 'director', label: 'Director', desc: 'Campus leadership', color: 'border-purple-500/30 bg-purple-500/10 text-purple-400', icon: <Shield size={24} /> },
+  { value: 'principal', label: 'Principal', desc: 'School leadership', color: 'border-fuchsia-500/30 bg-fuchsia-500/10 text-fuchsia-400', icon: <Shield size={24} /> },
   { value: 'superintendent', label: 'Superintendent', desc: 'District-wide oversight', color: 'border-rose-500/30 bg-rose-500/10 text-rose-400', icon: <DistrictIcon /> },
 ];
 
diff --git a/frontend/src/components/vocational-opportunities/VocationalOpportunitiesView.tsx b/frontend/src/components/vocational-opportunities/VocationalOpportunitiesView.tsx
index 8f6b8b4..a41ca80 100644
--- a/frontend/src/components/vocational-opportunities/VocationalOpportunitiesView.tsx
+++ b/frontend/src/components/vocational-opportunities/VocationalOpportunitiesView.tsx
@@ -4,6 +4,7 @@ import { VocationalLoadingState } from '@/components/vocational-opportunities/Vo
 import { VocationalPreSearchState } from '@/components/vocational-opportunities/VocationalPreSearchState';
 import { VocationalResults } from '@/components/vocational-opportunities/VocationalResults';
 import { VocationalZipSearch } from '@/components/vocational-opportunities/VocationalZipSearch';
+import { PageSkeleton } from '@/components/ui/page-skeleton';
 import { StatePanel } from '@/components/ui/state-panel';
 
 interface VocationalOpportunitiesViewProps {
@@ -11,20 +12,19 @@ interface VocationalOpportunitiesViewProps {
 }
 
 export function VocationalOpportunitiesView({ workflow }: VocationalOpportunitiesViewProps) {
+  if (workflow.isLoading) {
+    return <PageSkeleton />;
+  }
+
   return (
     <div className="space-y-6">
       <VocationalHeader />
-      {workflow.isLoading && (
-        <StatePanel tone="sky" loading>
-          Loading vocational opportunities...
-        </StatePanel>
-      )}
       {workflow.error && (
         <StatePanel tone="red" role="alert">
           Vocational opportunities could not be loaded from the backend.
         </StatePanel>
       )}
-      {!workflow.isLoading && !workflow.error && (
+      {!workflow.error && (
         <>
           <VocationalZipSearch workflow={workflow} />
           <VocationalLoadingState workflow={workflow} />
diff --git a/frontend/src/shared/api/zoneCheckins.test.ts b/frontend/src/shared/api/zoneCheckins.test.ts
index 54b801c..a5bf991 100644
--- a/frontend/src/shared/api/zoneCheckins.test.ts
+++ b/frontend/src/shared/api/zoneCheckins.test.ts
@@ -21,8 +21,9 @@ describe('zoneCheckins API', () => {
 
   it('fetches today zone check-in status', async () => {
     const todayCheckin: ZoneCheckinTodayDto = {
+      date: '2026-06-12',
       zone: 'green',
-      checkedInAt: '2026-06-12T10:00:00Z',
+      isCheckedInToday: true,
     };
     apiRequestMock.mockResolvedValueOnce(todayCheckin);
 
@@ -33,8 +34,9 @@ describe('zoneCheckins API', () => {
 
   it('checks in to a zone', async () => {
     const todayCheckin: ZoneCheckinTodayDto = {
+      date: '2026-06-12',
       zone: 'blue',
-      checkedInAt: '2026-06-12T10:30:00Z',
+      isCheckedInToday: true,
     };
     apiRequestMock.mockResolvedValueOnce(todayCheckin);
 
@@ -48,8 +50,9 @@ describe('zoneCheckins API', () => {
 
   it('clears today zone check-in', async () => {
     const clearedCheckin: ZoneCheckinTodayDto = {
+      date: '2026-06-12',
       zone: null,
-      checkedInAt: null,
+      isCheckedInToday: false,
     };
     apiRequestMock.mockResolvedValueOnce(clearedCheckin);
 
diff --git a/frontend/src/shared/constants/appData.ts b/frontend/src/shared/constants/appData.ts
index ee03584..079a03a 100644
--- a/frontend/src/shared/constants/appData.ts
+++ b/frontend/src/shared/constants/appData.ts
@@ -9,8 +9,12 @@ const ADMIN: readonly UserRole[] = [
   'owner',
   'superintendent',
 ];
+// School-tier leadership (Principal = full access, Registrar = read-only audit).
+// Both see every school surface; the backend enforces registrar's read-only.
+const SCHOOL_LEADERSHIP: readonly UserRole[] = ['principal', 'registrar'];
 const ALL_STAFF: readonly UserRole[] = [
   ...ADMIN,
+  ...SCHOOL_LEADERSHIP,
   'director',
   'office_manager',
   'teacher',
@@ -19,14 +23,24 @@ const ALL_STAFF: readonly UserRole[] = [
 // Campus modules office_manager does not get (classroom/instructional tools).
 const STAFF_NO_OFFICE: readonly UserRole[] = [
   ...ADMIN,
+  ...SCHOOL_LEADERSHIP,
   'director',
   'teacher',
   'support_staff',
 ];
-// Parent communication: teaching staff + admin (no support/office).
-const PARENT_COMM: readonly UserRole[] = [...ADMIN, 'director', 'teacher'];
-// Director-only surfaces (dashboard, walkthrough).
-const DIRECTOR_ONLY: readonly UserRole[] = [...ADMIN, 'director'];
+// Parent communication: teaching staff + admin + school leadership (no support/office).
+const PARENT_COMM: readonly UserRole[] = [
+  ...ADMIN,
+  ...SCHOOL_LEADERSHIP,
+  'director',
+  'teacher',
+];
+// Leadership surfaces (dashboard, walkthrough): admin + school leadership + director.
+const DIRECTOR_ONLY: readonly UserRole[] = [
+  ...ADMIN,
+  ...SCHOOL_LEADERSHIP,
+  'director',
+];
 // External-facing pages: all staff plus students and guardians.
 const EXTERNAL: readonly UserRole[] = [...ALL_STAFF, 'student', 'guardian'];
 
diff --git a/frontend/src/shared/constants/roles.ts b/frontend/src/shared/constants/roles.ts
index 893aed5..c9e678d 100644
--- a/frontend/src/shared/constants/roles.ts
+++ b/frontend/src/shared/constants/roles.ts
@@ -9,6 +9,8 @@ export const USER_ROLE_VALUES: readonly UserRole[] = [
   'system_admin',
   'owner',
   'superintendent',
+  'principal',
+  'registrar',
   'director',
   'office_manager',
   'teacher',
diff --git a/frontend/src/shared/constants/topBar.ts b/frontend/src/shared/constants/topBar.ts
index f33e48f..f799aae 100644
--- a/frontend/src/shared/constants/topBar.ts
+++ b/frontend/src/shared/constants/topBar.ts
@@ -5,6 +5,8 @@ export const TOP_BAR_ROLE_BADGE_CLASSES: Record<UserRole, { readonly color: stri
   system_admin: { color: 'text-rose-400', bg: 'bg-rose-500/15 border-rose-500/20' },
   owner: { color: 'text-fuchsia-400', bg: 'bg-fuchsia-500/15 border-fuchsia-500/20' },
   superintendent: { color: 'text-rose-400', bg: 'bg-rose-500/15 border-rose-500/20' },
+  principal: { color: 'text-fuchsia-400', bg: 'bg-fuchsia-500/15 border-fuchsia-500/20' },
+  registrar: { color: 'text-violet-400', bg: 'bg-violet-500/15 border-violet-500/20' },
   director: { color: 'text-purple-400', bg: 'bg-purple-500/15 border-purple-500/20' },
   office_manager: { color: 'text-amber-400', bg: 'bg-amber-500/15 border-amber-500/20' },
   teacher: { color: 'text-emerald-400', bg: 'bg-emerald-500/15 border-emerald-500/20' },
diff --git a/frontend/src/shared/types/app.ts b/frontend/src/shared/types/app.ts
index 51baad5..9c9a450 100644
--- a/frontend/src/shared/types/app.ts
+++ b/frontend/src/shared/types/app.ts
@@ -3,6 +3,8 @@ export type UserRole =
   | 'system_admin'
   | 'owner'
   | 'superintendent'
+  | 'principal'
+  | 'registrar'
   | 'director'
   | 'office_manager'
   | 'teacher'