diff --git a/app/controllers/exercise_controller.rb b/app/controllers/exercise_controller.rb
index 3ed5886e7..8fa90ea46 100644
--- a/app/controllers/exercise_controller.rb
+++ b/app/controllers/exercise_controller.rb
@@ -356,6 +356,7 @@ class ExerciseController < ApplicationController
   end
 
   def student_exercise_list
+=begin
     if @exercise.end_time <= Time.now
       @course.student.each do |student|
         if ExerciseUser.where("user_id = ? && exercise_id = ?",student.student_id,@exercise.id).empty?
@@ -367,6 +368,7 @@ class ExerciseController < ApplicationController
         exercise_user.update_attributes(:score => s_score)
       end
     end
+=end
     @is_teacher = User.current.allowed_to?(:as_teacher,@course) || User.current.admin?
     @all_exercises = @course.exercises.where("exercise_status > 1").order("created_at desc")
     @exercise_count = @exercise.exercise_users.where('score is not NULL').count