diff --git a/app/controllers/departments_controller.rb b/app/controllers/departments_controller.rb
new file mode 100644
index 000000000..f0fa8fe2c
--- /dev/null
+++ b/app/controllers/departments_controller.rb
@@ -0,0 +1,11 @@
+class DepartmentsController < ApplicationController
+  def for_option
+    render_ok(departments: Department.cached_names_data(current_school))
+  end
+
+  private
+
+  def current_school
+    @_current_school ||= School.find(params[:id])
+  end
+end
\ No newline at end of file
diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index ff4dc6be9..2761523a6 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -1278,14 +1278,8 @@ class ExercisesController < ApplicationController
 
           #搜索
           if params[:search].present?
-            search_content = params[:search]
-            #搜索用户的nickname,如果存在则返回，否则继续查询用户的真实姓名或学生号
-            nick_name_search = @exercise_users_list.where(user_id: User.where('CONCAT(users.lastname, users.firstname) like ?',"%#{search_content}%"))
-            if nick_name_search.present?
-              @exercise_users_list = nick_name_search
-            else
-              @exercise_users_list = @exercise_users_list.joins(user: [:user_extension]).where('user_extensions.student_id like ? OR user_extensions.student_realname like ?',"%#{search_content}%","%#{search_content}%")
-            end
+
+            @exercise_users_list = @exercise_users_list.joins(user: :user_extension).where("CONCAT(lastname, firstname) like ? OR student_id like ?", "%#{params[:search]}%", "%#{params[:search]}%")
           end
 
           @export_ex_users = @exercise_users_list
diff --git a/app/controllers/polls_controller.rb b/app/controllers/polls_controller.rb
index cd9679972..7ac288d7d 100644
--- a/app/controllers/polls_controller.rb
+++ b/app/controllers/polls_controller.rb
@@ -953,12 +953,16 @@ class PollsController < ApplicationController
         @poll_publish_count = get_user_permission_course(poll_ids,2).count
         @poll_unpublish_count = get_user_permission_course(poll_ids,1).count
         @course_all_members = @course.students
+        logger.info("#######F___________poll_user_ids________________####{@poll.poll_users.pluck(:id)}")
         @poll_group_counts = @course.course_groups_count
 
         if @user_course_identity < Course::STUDENT  #当前为老师，而且老师只能查看自己班级的/课堂的问卷
           @poll_current_user_status = 0
-          @poll_users_list = @poll.all_poll_users(current_user.id).distinct   #该老师分班的全部学生
+          @poll_users_list = @poll.all_poll_users(current_user.id)   #该老师分班的全部学生
           get_poll_answers(@poll_users_list)
+          logger.info("#######F__________@poll_users_list________________####{@poll_users_list.pluck(:id)}")
+          logger.info("#######F__________@users_ids________________####{PollUser.where(id:@poll_users_list.pluck(:id)).pluck(:user_id)}")
+
 
           if @poll_list_status == 1
             @poll_course_groups =[]
@@ -1026,20 +1030,18 @@ class PollsController < ApplicationController
 
           #搜索
           if search_content.present?
-            #搜索用户的nickname,如果存在则返回，否则继续查询用户的真实姓名或学生号
-            nick_name_search = @poll_users_list.where(user_id: User.where('CONCAT(users.lastname, users.firstname) like ?',"%#{search_content}%"))
-            if nick_name_search.present?
-              @poll_users_list = nick_name_search
-            else
-              @poll_users_list = @poll_users_list.joins(user: [:user_extension]).where('user_extensions.student_id like ? OR user_extensions.student_realname like ?',"%#{search_content}%","%#{search_content}%")
-            end
+            @poll_users_list = @poll_users_list.joins(user: :user_extension).where("CONCAT(lastname, firstname) like ? OR student_id like ?", "%#{search_content}%", "%#{search_content}%")
           end
 
+          logger.info("#######F_______@poll_users_list_last___@users_ids________________####{@poll_users_list.pluck(:id)}")
+
+
           @poll_users_size = @poll_users_list.count
           # 分页
-          @page  = params[:page]  || 1
-          @limit = params[:limit] || 20
-          @poll_users_list = @poll_users_list.page(@page).per(@limit)
+          page  = params[:page] || 1
+          limit = params[:limit] || 20
+          @poll_users_list = @poll_users_list.page(page).per(limit)
+          logger.info("#######F_______@poll_users_list_after_page___@users_ids________________####{@poll_users_list.pluck(:id)}")
         else
           @poll_users_list = []
           @poll_users_size = 0
diff --git a/app/controllers/schools_controller.rb b/app/controllers/schools_controller.rb
index 11932be42..ea94f4c69 100644
--- a/app/controllers/schools_controller.rb
+++ b/app/controllers/schools_controller.rb
@@ -9,4 +9,8 @@ class SchoolsController < ApplicationController
 
     render_ok(school_names: schools.pluck(:name))
   end
+
+  def for_option
+    render_ok(schools: School.cached_names_data)
+  end
 end
diff --git a/app/models/department.rb b/app/models/department.rb
index 15a8a7c1b..bf5c3a90e 100644
--- a/app/models/department.rb
+++ b/app/models/department.rb
@@ -2,4 +2,26 @@ class Department < ApplicationRecord
   belongs_to :school
 
   has_many :department_members, dependent: :destroy
+
+  after_create_commit :reset_data_cache
+  after_update_commit :reset_data_cache
+
+  def self.cached_names_data(school)
+    Rails.cache.fetch(names_data_cache_key(school.id), expires_in: 7.days) do
+      school.departments.select(:id, :name).as_json
+    end
+  end
+
+  private
+
+  def reset_data_cache
+    # 清除部门名称缓存
+    if new_record? || name_previously_changed?
+      Rails.cache.delete(self.class.names_data_cache_key(school_id))
+    end
+  end
+
+  def self.names_data_cache_key(school_id)
+    "schools/#{school_id}/department_names_data"
+  end
 end
diff --git a/app/models/poll.rb b/app/models/poll.rb
index f72239ba7..7e71505ba 100644
--- a/app/models/poll.rb
+++ b/app/models/poll.rb
@@ -52,12 +52,12 @@ class Poll < ApplicationRecord
 
   # 统一设置，为当前老师有权限的分班学生，分班设置，也为当前老师有权限的分班的学生
   def all_poll_users(user_id)
-    poll_users = self.poll_users
+    poll_all_users = poll_users
     group_ids = poll_published_ids(user_id)
     if group_ids.present?
-      poll_users = poll_users.where(user_id: course.students.where(course_group_id: group_ids).pluck(:user_id))
+      poll_all_users = poll_all_users.where(user_id: course.students.where(course_group_id: group_ids).pluck(:user_id).uniq)
     end
-    poll_users
+    poll_all_users
   end
 
   #当前用户已发布的班级id和试卷分组已发布的班级id的交集
diff --git a/app/models/school.rb b/app/models/school.rb
index af04ed0c7..983a93735 100644
--- a/app/models/school.rb
+++ b/app/models/school.rb
@@ -1,4 +1,6 @@
 class School < ApplicationRecord
+  has_many :departments, dependent: :destroy
+
   has_many :shixun_schools, :dependent => :destroy
   has_many :shixuns, :through => :shixun_schools
 
@@ -8,6 +10,9 @@ class School < ApplicationRecord
   has_many :ec_major_schools, :dependent => :destroy
   has_many :ec_majors, :through => :ec_major_schools
 
+  after_create_commit :reset_data_cache
+  after_update_commit :reset_data_cache
+
   # 学校管理员
   def manager?(user)
     ec_school_users.exists?(user_id: user.id)
@@ -28,4 +33,23 @@ class School < ApplicationRecord
   def manage_permission?(user)
     manager?(user) || major_manager?(user) || course_manager?(user)
   end
+
+  def self.cached_names_data
+    Rails.cache.fetch(names_data_cache_key, expires_in: 7.days) do
+      School.select(:id, :name).as_json
+    end
+  end
+
+  private
+
+  def reset_data_cache
+    # 清除学校名称缓存
+    if new_record? || name_previously_changed?
+      Rails.cache.delete(self.class.names_data_cache_key)
+    end
+  end
+
+  def self.names_data_cache_key
+    'schools/names_data'
+  end
 end
diff --git a/config/routes.rb b/config/routes.rb
index 0f47cda76..a27dde1f3 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -576,9 +576,13 @@ Rails.application.routes.draw do
 
     resources :schools do
       member do
+        resources :departments, only: [] do
+          get :for_option, on: :collection
+        end
       end
       collection do
-        get "school_list"
+        get :school_list
+        get :for_option
       end
 
       scope module: :ecs do