diff --git a/app/controllers/colleges_controller.rb b/app/controllers/colleges_controller.rb
index fff508a8..418015fd 100644
--- a/app/controllers/colleges_controller.rb
+++ b/app/controllers/colleges_controller.rb
@@ -50,7 +50,7 @@ class CollegesController < ApplicationController
     # Redo：这样做内存会卡死的
     # user_ids = User.find_by_sql("SELECT users.id FROM users LEFT JOIN user_extensions ON users.id=user_extensions.user_id WHERE user_extensions.`school_id` = #{@school.id}").map(&:id)
     # Redo：是否直接使用count会更好
-    all_course_ids = Course.joins("join users u on courses.tea_id = u.id").joins("join user_extensions ue on u.id = ue.user_id").where("courses.id != 1309 and ue.school_id = #{@school.id}")
+    all_course_ids = Course.where("id != 1309 and is_delete = 0 and school_id = #{@school.id}")
     @courses_count = all_course_ids.size
 
     # Redo：对于量比较大的尽量不使用笛卡尔积
@@ -131,7 +131,7 @@ class CollegesController < ApplicationController
                (select count(m.id) from messages m inner join boards b on  b.id=m.board_id and b.parent_id=0 where b.course_id=c.id group by c.id) as messages_count,
                c.tea_id, c.name, c.is_end,
                (SELECT MAX(created_at) FROM `course_activities` ca WHERE ca.course_id = c.id) AS update_time
-               FROM `courses` c WHERE (c.school_id = #{@school.id} and c.is_delete = 0)")
+               FROM `courses` c WHERE c.school_id = #{@school.id} and c.is_delete = 0")
 
     @courses.each do |course|
       course[:evaluating_count] = Output.find_by_sql("select sum(g.evaluate_count) as evaluating_count from games g inner join
diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index e87c7297..669cc58f 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -577,7 +577,7 @@ class CoursesController < ApplicationController
           cha_member.member_roles.where("role_id = 10").first.destroy
           StudentsForCourse.where(:course_id => @course.id, :student_id => cha_member.user_id).destroy_all
         end
-        @course.update_attributes(:tea_id => cha_member.user_id)
+        @course.update_attributes(:tea_id => cha_member.user_id, :school_id => cha_member.user.try(:user_extensions).try(:school_id))
         man_member.member_roles.first.update_attributes(:role_id => 9)
         course_act = CourseActivity.where(:course_id => @course.id, :course_act_id => @course.id, :course_act_type => 'Course').first
         course_act.update_column('user_id', cha_member.user_id)
diff --git a/app/controllers/managements_controller.rb b/app/controllers/managements_controller.rb
index 54b7ffe6..eb3c37c9 100644
--- a/app/controllers/managements_controller.rb
+++ b/app/controllers/managements_controller.rb
@@ -853,7 +853,7 @@ class ManagementsController < ApplicationController
 
   def evaluate_simple
     page = params[:page]
-    @recodes = EvaluateRecord.where("created_at > ?", Time.now - 10000.days).reorder("consume_time desc")
+    @recodes = EvaluateRecord.where("created_at > ?", Time.now - 1.days).reorder("consume_time desc")
     @recodes_count = @recodes.size
     @record_pages = Paginator.new @recodes_count, 20, page || 1
     @offset ||=  @record_pages.offset
diff --git a/app/controllers/myshixuns_controller.rb b/app/controllers/myshixuns_controller.rb
index f6854c7a..add6511c 100644
--- a/app/controllers/myshixuns_controller.rb
+++ b/app/controllers/myshixuns_controller.rb
@@ -1,8 +1,8 @@
 # encoding: utf-8
 class MyshixunsController < ApplicationController
   layout 'base_myshixun'
-  skip_before_filter :verify_authenticity_token, :only => [:training_task_status, :close_webssh, :code_runinng_message]
-  before_filter :require_login, :except => [:training_task_status, :close_webssh, :code_runinng_message]
+  skip_before_filter :verify_authenticity_token, :only => [:training_task_status, :close_webssh, :code_runinng_message, :vnc]
+  before_filter :require_login, :except => [:training_task_status, :close_webssh, :code_runinng_message, :vnc]
   before_filter :check_authentication, :except => [:training_task_status, :close_webssh, :mul_test_home, :mul_test_user,
                                                    :mul_test_myshixun, :mul_test_shixun, :mul_test_start, :code_runinng_message]
   before_filter :find_myshixun, :only => [:show, :myshixun_reset, :open_webssh, :sync_reset_time, :destroy, :search_file_list, :vnc]
diff --git a/app/models/shixun.rb b/app/models/shixun.rb
index 439c0e44..bf06b583 100644
--- a/app/models/shixun.rb
+++ b/app/models/shixun.rb
@@ -57,7 +57,7 @@ class Shixun < ActiveRecord::Base
   scope :visible, lambda{where(status: [2,3])}
   scope :min, lambda { select([:id, :name, :gpid, :modify_time, :reset_time, :language, :propaedeutics, :status, :identifier,
                                :test_set_permission, :hide_code, :forbid_copy, :hidden, :webssh, :user_id, :code_hidden,
-                               :task_pass, :exec_time, :multi_webssh]) }
+                               :task_pass, :exec_time, :multi_webssh, :vnc]) }
   scope :published, lambda{where(status: 2)}
   scope :field_for_recommend, lambda{ select([:id, :name, :identifier, :myshixuns_count]) }
 
diff --git a/app/services/games_service.rb b/app/services/games_service.rb
index 9e1ea356..a53ee086 100644
--- a/app/services/games_service.rb
+++ b/app/services/games_service.rb
@@ -75,7 +75,8 @@ class GamesService
                  :challenge => game_challenge.try(:attributes), :game => game.try(:attributes), :shixun => shixun.try(:attributes),
                  :record => record, :grade => grade, :prev_game => prev_game, :next_game => next_game, :username => username,
                  :image_url => image_url, :user_url => user_url, :praise_count => praise_count, :user_praise => user_praise, :time_limit => time_limit,
-                 :tomcat_url  => Redmine::Configuration['tomcat_php'], :is_teacher => is_teacher, :power => power, :myshixun_manager => myshixun_manager}
+                 :tomcat_url  => Redmine::Configuration['tomcat_php'], :is_teacher => is_teacher, :power => power, :myshixun_manager => myshixun_manager,
+                 :vnc => shixun.vnc}
 
     # 区分选择题和编程题，st：0编程题；
     if st == 0
diff --git a/app/views/shixuns/_form.html.erb b/app/views/shixuns/_form.html.erb
index 53d38a63..337ecee2 100644
--- a/app/views/shixuns/_form.html.erb
+++ b/app/views/shixuns/_form.html.erb
@@ -156,7 +156,7 @@
       <label style="top:6px" class="color-grey-6" for="can_copy">勾选则允许认证教师复制该实训</label>
     </li>
   </div>
-  <% if Redmine::Configuration['gitlab_address'].include?("test") %>
+  <% if User.current.admin? %>
     <div class="mb10 edu-back-white padding30-20">
       <p class="color-grey-6 font-16 mb10">VNC图形化</p>
       <li class="mb20">
diff --git a/app/views/shixuns/_settings_edit.html.erb b/app/views/shixuns/_settings_edit.html.erb
index 6ebbf633..6ebd6138 100644
--- a/app/views/shixuns/_settings_edit.html.erb
+++ b/app/views/shixuns/_settings_edit.html.erb
@@ -211,7 +211,7 @@
           </span>
       </div>
 
-      <% if Redmine::Configuration['gitlab_address'].include?("test") %>
+      <% if User.current.admin? %>
           <div class="clearfix mt20">
               <span class="color-grey-6 mt5 fl" style="min-width: 95px;">VNC图形化:</span>
               <span class="fl">
diff --git a/db/migrate/20190528013018_migrate_course_school_id.rb b/db/migrate/20190528013018_migrate_course_school_id.rb
new file mode 100644
index 00000000..b0669591
--- /dev/null
+++ b/db/migrate/20190528013018_migrate_course_school_id.rb
@@ -0,0 +1,11 @@
+class MigrateCourseSchoolId < ActiveRecord::Migration
+  def up
+    courses = Course.includes(teacher: :user_extensions).where("courses.school_id != user_extensions.school_id or courses.school_id is null")
+    courses.each do |course|
+      course.update_column('school_id', course.teacher.try(:user_extensions).try(:school_id))
+    end
+  end
+
+  def down
+  end
+end