diff --git a/Gemfile b/Gemfile
--- a/Gemfile
+++ b/Gemfile
@@ -57,9 +57,13 @@
 gem 'bootstrap-toggle-rails'
 gem 'autoprefixer-rails'
 
+#bootstrap sortable
+gem 'momentjs-rails'
+gem 'rails_bootstrap_sortable'
+
+#ace editor
 gem 'ace-rails-ap'
 
-
 gem 'haml'
 gem 'haml-rails'
 gem 'mail'
diff --git a/Gemfile.lock b/Gemfile.lock
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -90,6 +90,8 @@
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
     mime-types (1.25.1)
+    momentjs-rails (2.11.1)
+      railties (>= 3.1)
     multi_json (1.10.1)
     mysql2 (0.3.20)
     polyglot (0.3.5)
@@ -111,6 +113,8 @@
       activesupport (= 3.2.21)
       bundler (~> 1.0)
       railties (= 3.2.21)
+    rails_bootstrap_sortable (2.0.0)
+      momentjs-rails (~> 2, >= 2.8.3)
     railties (3.2.21)
       actionpack (= 3.2.21)
       activesupport (= 3.2.21)
@@ -183,9 +187,11 @@
   jquery-timepicker-addon-rails
   jquery-ui-sass-rails
   mail
+  momentjs-rails
   mysql2
   prototype-rails
   rails (= 3.2.21)
+  rails_bootstrap_sortable
   rdiscount
   rouge
   rspec-rails (~> 2.99.0)
diff --git a/app/assets/javascripts/application.js b/app/assets/javascripts/application.js
--- a/app/assets/javascripts/application.js
+++ b/app/assets/javascripts/application.js
@@ -14,8 +14,8 @@
 //= require jquery_ujs
 //= require jquery.ui.all
 //= require bootstrap-sprockets
-//x= require bootstrap-switch
-//= require bootstrap-toggle
+//= require moment
+//= require bootstrap-sortable
 //= require select2
 //= require custom
 //= require ace-rails-ap
diff --git a/app/assets/javascripts/custom.js.coffee b/app/assets/javascripts/custom.js.coffee
--- a/app/assets/javascripts/custom.js.coffee
+++ b/app/assets/javascripts/custom.js.coffee
@@ -37,7 +37,7 @@
     target.addClass 'btn-warning'
     target.text '...'
     return
-  
+
   #ace editor
   e = ace.edit("editor")
   e.setTheme('ace/theme/merbivore')
diff --git a/app/assets/stylesheets/application.css.sass b/app/assets/stylesheets/application.css.sass
--- a/app/assets/stylesheets/application.css.sass
+++ b/app/assets/stylesheets/application.css.sass
@@ -32,6 +32,7 @@
 @import select2-bootstrap
 //@import bootstrap3-switch
 @import bootstrap-toggle
+@import bootstrap-sortable
 
 //bootstrap navbar color (from)
 $bgDefault      : #19197b
@@ -105,6 +106,8 @@
 .secondnavbar
   top: 50px
 
+
+// --------------- bootstrap file upload ----------------------
 .btn-file
   position: relative
   overflow: hidden
@@ -130,8 +133,18 @@
   //font-family: Tahoma, "sans-serif"
   margin: 10px
   padding: 10px
-  padding-top: 40px
+  padding-top: 60px
 
+// ------------------ bootstrap sortable --------------------
+table.sortable th
+  padding-right: 20px !important
+  span.sign
+    right: -15px !important
+  &.text-right
+    padding-left: 20px !important
+    padding-right: 8px !important
+    &:after, span.sign
+      left: -15px !important
 
 input
   font-family: Tahoma, "sans-serif"
diff --git a/app/controllers/report_controller.rb b/app/controllers/report_controller.rb
--- a/app/controllers/report_controller.rb
+++ b/app/controllers/report_controller.rb
@@ -12,6 +12,36 @@
     admin_authorization
   }
 
+  def score
+    if params[:commit] == 'download csv'
+      @problems = Problem.all
+    else
+      @problems = Problem.find_available_problems
+    end
+    @users = User.includes(:contests, :contest_stat).where(enabled: true) #find(:all, :include => [:contests, :contest_stat]).where(enabled: true)
+    @scorearray = Array.new
+    @users.each do |u|
+      ustat = Array.new
+      ustat[0] = u
+      @problems.each do |p|
+        sub = Submission.find_last_by_user_and_problem(u.id,p.id)
+        if (sub!=nil) and (sub.points!=nil) and p and p.full_score
+          ustat << [(sub.points.to_f*100/p.full_score).round, (sub.points>=p.full_score)]
+        else
+          ustat << [0,false]
+        end
+      end
+      @scorearray << ustat
+    end
+    if params[:commit] == 'download csv' then
+      csv = gen_csv_from_scorearray(@scorearray,@problems)
+      send_data csv, filename: 'last_score.csv'
+    else
+      render template: 'user_admin/user_stat'
+    end
+
+  end
+
   def login_stat
     @logins = Array.new
 
@@ -73,12 +103,7 @@
     Submission.where("submitted_at >= ? AND submitted_at <= ?",@since_time,@until_time).find_each do |s|
       if @submissions[s.user_id]
         if not @submissions[s.user_id][:sub].has_key?(s.problem_id)
-          a = nil
-          begin
-            a = Problem.find(s.problem_id)
-          rescue
-            a = nil
-          end
+          a = Problem.find_by_id(s.problem_id)
           @submissions[s.user_id][:sub][s.problem_id] = 
             { prob_name: (a ? a.full_name : '(NULL)'),
               sub_ids: [s.id] } 
diff --git a/app/views/problems/toggle_test.js.haml b/app/views/problems/toggle_test.js.haml
new file mode 100644
--- /dev/null
+++ b/app/views/problems/toggle_test.js.haml
@@ -0,0 +1,2 @@
+= render partial: 'toggle_button',
+                  locals: {button_id: "#problem-test-#{@problem.id}",button_on: @problem.test_allowed?}
diff --git a/app/views/user_admin/user_stat.html.haml b/app/views/user_admin/user_stat.html.haml
--- a/app/views/user_admin/user_stat.html.haml
+++ b/app/views/user_admin/user_stat.html.haml
@@ -1,12 +1,12 @@
-- content_for :header do
-  = javascript_include_tag 'local_jquery'
-  = stylesheet_link_tag 'tablesorter-theme.cafe'
+/- content_for :header do
+/ = javascript_include_tag 'local_jquery'
+/ = stylesheet_link_tag 'tablesorter-theme.cafe'
 
 %script{:type=>"text/javascript"}
   $(function () {
   $('#since_datetime').datetimepicker({ showButtonPanel: true, dateFormat: "yy-mm-dd", controlType: "slider"} );
   $('#until_datetime').datetimepicker({ showButtonPanel: true, dateFormat: "yy-mm-dd", controlType: "slider"} );
-  $('#my_table').tablesorter({widgets: ['zebra']});
+  /$('#my_table').tablesorter({widgets: ['zebra']});
   });
 
 %h1 User grading results
@@ -26,22 +26,22 @@
   = link_to '[Show only latest submissions]', controller: :user_admin, action: :user_stat
   = link_to '[download csv with all problems]', controller: :user_admin, action: :user_stat_max, commit: 'download csv'
 
-%table.tablesorter-cafe#my_table
+%table.table.sortable.table-striped.table-bordered
   %thead
     %tr
-      %th User
+      %th Login
       %th Name
       %th Activated?
-      %th Logged in
+      %th Logged_in
       %th Contest(s)
       %th Remark
       - @problems.each do |p|
-        %th= p.name
-      %th Total
-      %th Passed
+        %th.text-right= p.name
+      %th.text-right Total
+      %th.text-right Passed
   %tbody
     - @scorearray.each do |sc|
-      %tr{class: cycle('info-even','info-odd')}
+      %tr
         - total,num_passed = 0,0
         - sc.each_index do |i|
           - if i == 0
@@ -52,8 +52,10 @@
             %td= sc[i].contests.collect {|c| c.name}.join(', ') 
             %td= sc[i].remark
           - else
-            %td= sc[i][0]
+            %td.text-right= sc[i][0]
             - total += sc[i][0]
             - num_passed += 1 if sc[i][1]
-        %td= total 
-        %td= num_passed
+        %td.text-right= total 
+        %td.text-right= num_passed
+:javascript
+  $.bootstrapSortable(true,'reversed')