diff --git a/app/models/attempt.rb b/app/models/attempt.rb
index 50819d4d..6cd53878 100644
--- a/app/models/attempt.rb
+++ b/app/models/attempt.rb
@@ -33,7 +33,7 @@ class Attempt < ApplicationRecord
       if school_category.nil?
         school_category = SchoolCategory.create(school: recipient.school, category: question.category)
       end
-      # school_category.aggregate_responses
+      school_category.sync_aggregated_responses
     end
 
 end
diff --git a/app/models/school_category.rb b/app/models/school_category.rb
index 461c7510..eb2af60f 100644
--- a/app/models/school_category.rb
+++ b/app/models/school_category.rb
@@ -3,6 +3,9 @@ class SchoolCategory < ApplicationRecord
   belongs_to :school
   belongs_to :category
 
+  validates_associated :school
+  validates_associated :category
+
   scope :for, -> (school, category) { where(school: school).where(category: category) }
 
   def aggregated_responses
@@ -14,9 +17,9 @@ class SchoolCategory < ApplicationRecord
       select('sum(attempts.answer_index) as answer_index_total')[0]
 
     return {
-      attempt_count: attempt_data.attempt_count,
-      response_count: attempt_data.response_count,
-      answer_index_total: attempt_data.answer_index_total
+      attempt_count: attempt_data.attempt_count || 0,
+      response_count: attempt_data.response_count || 0,
+      answer_index_total: attempt_data.answer_index_total || 0
     }
   end
 
diff --git a/db/migrate/20170312202259_create_school_categories.rb b/db/migrate/20170312202259_create_school_categories.rb
index f311dc38..3873d546 100644
--- a/db/migrate/20170312202259_create_school_categories.rb
+++ b/db/migrate/20170312202259_create_school_categories.rb
@@ -3,9 +3,9 @@ class CreateSchoolCategories < ActiveRecord::Migration[5.0]
     create_table :school_categories do |t|
       t.references :school, foreign_key: true
       t.references :category, foreign_key: true
-      t.integer :attempt_count
-      t.integer :response_count
-      t.integer :answer_index_total
+      t.integer :attempt_count, default: 0
+      t.integer :response_count, default: 0
+      t.integer :answer_index_total, default: 0
 
       t.timestamps
     end
diff --git a/db/schema.rb b/db/schema.rb
index fa14b561..03f74196 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -125,11 +125,11 @@ ActiveRecord::Schema.define(version: 20170312202259) do
   create_table "school_categories", force: :cascade do |t|
     t.integer  "school_id"
     t.integer  "category_id"
-    t.integer  "attempt_count"
-    t.integer  "response_count"
-    t.integer  "answer_index_total"
-    t.datetime "created_at",         null: false
-    t.datetime "updated_at",         null: false
+    t.integer  "attempt_count",      default: 0
+    t.integer  "response_count",     default: 0
+    t.integer  "answer_index_total", default: 0
+    t.datetime "created_at",                     null: false
+    t.datetime "updated_at",                     null: false
     t.index ["category_id"], name: "index_school_categories_on_category_id", using: :btree
     t.index ["school_id"], name: "index_school_categories_on_school_id", using: :btree
   end
diff --git a/lib/tasks/data.rake b/lib/tasks/data.rake
index f842b129..04d5d882 100644
--- a/lib/tasks/data.rake
+++ b/lib/tasks/data.rake
@@ -202,6 +202,6 @@ namespace :data do
     end
     ENV.delete('BULK_PROCESS')
 
-    SchoolCategory.all.each { |sc| sc.aggregate_responses }
+    SchoolCategory.all.each { |sc| sc.sync_aggregated_responses }
   end
 end
diff --git a/spec/models/attempt_spec.rb b/spec/models/attempt_spec.rb
index 76256fda..28d5bef2 100644
--- a/spec/models/attempt_spec.rb
+++ b/spec/models/attempt_spec.rb
@@ -9,7 +9,8 @@ RSpec.describe Attempt, type: :model do
     school.recipient_lists.create!(name: 'Parents', recipient_ids: "#{recipient.id}")
   end
 
-  let!(:question) { create_questions(1).first }
+  let!(:category) { Category.create(name: 'Category') }
+  let!(:question) { create_questions(1, category).first }
   let!(:question_list) do
     QuestionList.create!(name: 'Parent Questions', question_ids: "#{question.id}")
   end
@@ -35,6 +36,30 @@ RSpec.describe Attempt, type: :model do
     )
   end
 
+  describe 'after_save' do
+    let!(:school_categories) { SchoolCategory.for(attempt.recipient.school, attempt.question.category) }
+
+    it 'creates the associated school_category' do
+      expect(school_categories.count).to eq(1)
+      expect(school_categories.first.attempt_count).to eq(1)
+      expect(school_categories.first.response_count).to eq(0)
+      expect(school_categories.first.answer_index_total).to eq(0)
+    end
+
+    describe 'after_update' do
+      before :each do
+        attempt.update_attributes(answer_index: 4)
+      end
+
+      it 'updates associated school_categories' do
+        expect(school_categories.count).to eq(1)
+        expect(school_categories.first.attempt_count).to eq(1)
+        expect(school_categories.first.response_count).to eq(1)
+        expect(school_categories.first.answer_index_total).to eq(4)
+      end
+    end
+  end
+
   describe 'send_message' do
     before :each do
       Timecop.freeze
diff --git a/spec/models/recipient_schedule_spec.rb b/spec/models/recipient_schedule_spec.rb
index 4b22efef..71ad25b7 100644
--- a/spec/models/recipient_schedule_spec.rb
+++ b/spec/models/recipient_schedule_spec.rb
@@ -9,7 +9,8 @@ RSpec.describe RecipientSchedule, type: :model do
     school.recipient_lists.create!(name: 'Parents', recipient_ids: "#{recipient.id}")
   end
 
-  let!(:questions) { create_questions(3) }
+  let(:category) { Category.create(name: 'Category') }
+  let!(:questions) { create_questions(3, category) }
   let!(:question_list) do
     QuestionList.create!(name: 'Parent Questions', question_ids: questions.map(&:id).join(','))
   end