Add district_name and district_nces_id fields to schools

Author: Mohamed Ali

db/migrate/20251120145032_add_district_fields_to_schools.rb

@@ -0,0 +1,8 @@
+class AddDistrictFieldsToSchools < ActiveRecord::Migration[7.2]
+  def change
+    add_column :schools, :district_name, :string
+    add_column :schools, :district_nces_id, :string
+
+    add_index :schools, :district_nces_id
+  end
+end