diff --git a/app/models/school.rb b/app/models/school.rb
index 2f14500b0..0080abeeb 100644
--- a/app/models/school.rb
+++ b/app/models/school.rb
@@ -31,7 +31,11 @@ class School < ApplicationRecord
             format: { with: /\A[0-9]+[A-Z]+\z/, allow_nil: true, message: I18n.t('validations.school.school_roll_number') },
             presence: true,
             if: :ireland?
-  validates :creator_id, presence: true, uniqueness: true
+  validates :creator_id,
+            presence: true,
+            uniqueness: {
+              conditions: -> { where(rejected_at: nil) }
+            }
   validates :creator_agree_authority, presence: true, acceptance: true
   validates :creator_agree_terms_and_conditions, presence: true, acceptance: true
   validates :creator_agree_responsible_safeguarding, presence: true, acceptance: true
@@ -53,7 +57,7 @@ class School < ApplicationRecord
   after_create :generate_code!, if: -> { FeatureFlags.immediate_school_onboarding? }
 
   def self.find_for_user!(user)
-    school = Role.find_by(user_id: user.id)&.school || find_by(creator_id: user.id)
+    school = Role.find_by(user_id: user.id)&.school || find_by(creator_id: user.id, rejected_at: nil)
     raise ActiveRecord::RecordNotFound unless school
 
     school
diff --git a/db/migrate/20260323152328_update_creator_id_index_on_schools.rb b/db/migrate/20260323152328_update_creator_id_index_on_schools.rb
new file mode 100644
index 000000000..f7698eb83
--- /dev/null
+++ b/db/migrate/20260323152328_update_creator_id_index_on_schools.rb
@@ -0,0 +1,20 @@
+class UpdateCreatorIdIndexOnSchools < ActiveRecord::Migration[7.2]
+  def up
+    remove_index :schools, name: "index_schools_on_creator_id"
+
+    add_index :schools,
+              :creator_id,
+              unique: true,
+              where: "rejected_at IS NULL",
+              name: "index_schools_on_creator_id_active_only"
+  end
+
+  def down
+    remove_index :schools, name: "index_schools_on_creator_id_active_only"
+
+    add_index :schools,
+              :creator_id,
+              unique: true,
+              name: "index_schools_on_creator_id"
+  end
+end
\ No newline at end of file
diff --git a/db/schema.rb b/db/schema.rb
index dc022dbea..1699e359f 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.2].define(version: 2026_03_19_084433) do
+ActiveRecord::Schema[7.2].define(version: 2026_03_23_152328) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pgcrypto"
   enable_extension "plpgsql"
@@ -328,7 +328,7 @@
     t.string "district_nces_id"
     t.string "school_roll_number"
     t.index ["code"], name: "index_schools_on_code", unique: true
-    t.index ["creator_id"], name: "index_schools_on_creator_id", unique: true
+    t.index ["creator_id"], name: "index_schools_on_creator_id_active_only", unique: true, where: "(rejected_at IS NULL)"
     t.index ["reference"], name: "index_schools_on_reference", unique: true, where: "(rejected_at IS NULL)"
     t.index ["school_roll_number"], name: "index_schools_on_school_roll_number", unique: true, where: "(rejected_at IS NULL)"
   end
diff --git a/spec/models/school_spec.rb b/spec/models/school_spec.rb
index 06846060c..873441532 100644
--- a/spec/models/school_spec.rb
+++ b/spec/models/school_spec.rb
@@ -489,6 +489,14 @@
       user = build(:user)
       expect { described_class.find_for_user!(user) }.to raise_error(ActiveRecord::RecordNotFound)
     end
+
+    it('raises ActiveRecord::RecordNotFound if the user is the creator of a rejected school') do
+      creator = create(:user)
+      school.update!(creator_id: creator.id)
+      school.reject
+
+      expect { described_class.find_for_user!(creator) }.to raise_error(ActiveRecord::RecordNotFound)
+    end
   end
 
   describe '#verified?' do