diff --git a/app/controllers/exercise_controller.rb b/app/controllers/exercise_controller.rb
index 75751e4f7..73da3b9c4 100644
--- a/app/controllers/exercise_controller.rb
+++ b/app/controllers/exercise_controller.rb
@@ -1,8 +1,10 @@
 class ExerciseController < ApplicationController
   layout "base_courses"
 
-  before_filter :find_exercise_and_course, :only => [:create_exercise_question, :edit, :update, :show, :destroy, :commit_exercise, :commit_answer,:publish_exercise,:republish_exercise,:show_student_result]
-  before_filter :find_course, :only => [:index,:new,:create,:student_exercise_list]
+  before_filter :find_exercise_and_course, :only => [:create_exercise_question, :edit, :update, :show, :destroy,
+                                                        :commit_exercise, :commit_answer,:publish_exercise,:republish_exercise,
+                                                        :show_student_result,:student_exercise_list]
+  before_filter :find_course, :only => [:index,:new,:create]
   include ExerciseHelper
 
   def index
@@ -354,8 +356,18 @@ class ExerciseController < ApplicationController
   end
 
   def student_exercise_list
+    if @exercise.end_time <= Time.now
+      @course.student.each do |student|
+        if ExerciseUser.where("user_id = ? && exercise_id = ?",student.student_id,@exercise.id).empty?
+          ExerciseUser.create(:user_id => student.student_id, :exercise_id => @exercise.id, :start_at => @exercise.end_time, :status => false,:score=>0)
+        end
+
+        s_score = calculate_student_score(@exercise, student.student)
+        exercise_user = ExerciseUser.where("user_id =? and exercise_id=?", student.student_id, @exercise.id).first
+        exercise_user.update_attributes(:score => s_score)
+      end
+    end
     @is_teacher = User.current.allowed_to?(:as_teacher,@course) || User.current.admin?
-    @exercise = Exercise.find params[:id]
     @all_exercises = @course.exercises.where("exercise_status > 1").order("created_at desc")
     @exercise_count = @exercise.exercise_users.where('score is not NULL').count
     if @is_teacher || (!@exercise.exercise_users.where(:user_id => User.current.id).empty? && @exercise.end_time <= Time.now)
@@ -543,11 +555,11 @@ class ExerciseController < ApplicationController
   def show_student_result
     @user = User.find params[:user_id]
     @can_edit_excercise = false
-    @exercise_user = ExerciseUser.where("user_id =? and exercise_id=?", @user.id, @exercise.id).first
     @exercise_questions = @exercise.exercise_questions
     score = calculate_student_score(@exercise, @user)
     eu = get_exercise_user(@exercise.id, @user.id)
     eu.update_attributes(:score => score)
+    @exercise_user = ExerciseUser.where("user_id =? and exercise_id=?", @user.id, @exercise.id).first
     respond_to do |format|
       format.html {render :layout => 'base_courses'}
     end