diff --git a/app/controllers/user_admin_controller.rb b/app/controllers/user_admin_controller.rb
--- a/app/controllers/user_admin_controller.rb
+++ b/app/controllers/user_admin_controller.rb
@@ -129,12 +129,33 @@
       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) 
-	  ustat << [(sub.points.to_f*100/p.full_score).round, (sub.points>=p.full_score)]
-	else
-	  ustat << [0,false]
-	end
+        sub = Submission.find_last_by_user_and_problem(u.id,p.id)
+        if (sub!=nil) and (sub.points!=nil) 
+          ustat << [(sub.points.to_f*100/p.full_score).round, (sub.points>=p.full_score)]
+        else
+          ustat << [0,false]
+        end
+      end
+      @scorearray << ustat
+    end
+  end
+
+  def user_stat_max
+    @problems = Problem.find_available_problems
+    @users = User.find(:all, :include => [:contests, :contest_stat])
+    @scorearray = Array.new
+    #set up range from param
+    since_id = params.fetch(:since_id, 0).to_i
+    until_id = params.fetch(:until_id, 0).to_i
+    @users.each do |u|
+      ustat = Array.new
+      ustat[0] = u
+      @problems.each do |p|
+        max_points = 0
+        Submission.find_in_range_by_user_and_problem(u.id,p.id,since_id,until_id).each do |sub|
+          max_points = sub.points if sub and sub.points and (sub.points > max_points)
+        end
+        ustat << [(max_points.to_f*100/p.full_score).round, (max_points>=p.full_score)]
       end
       @scorearray << ustat
     end
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -13,6 +13,7 @@
       append_to menu_items, '[Problems]', 'problems', 'index'
       append_to menu_items, '[Users]', 'user_admin', 'index'
       append_to menu_items, '[Results]', 'user_admin', 'user_stat'
+      append_to menu_items, '[Report]', 'report', 'login_stat'
       append_to menu_items, '[Graders]', 'graders', 'list'
       append_to menu_items, '[Contests]', 'contest_management', 'index'
       append_to menu_items, '[Sites]', 'sites', 'index'
diff --git a/app/models/submission.rb b/app/models/submission.rb
--- a/app/models/submission.rb
+++ b/app/models/submission.rb
@@ -34,6 +34,13 @@
                            "ORDER BY user_id")
   end
 
+  def self.find_in_range_by_user_and_problem(user_id, problem_id,since_id,until_id)
+    records = Submission.where(problem_id: problem_id,user_id: user_id)
+    records = records.where('id >= ?',since_id) if since_id > 0
+    records = records.where('id <= ?',until_id) if until_id > 0
+    records.all
+  end
+
   def self.find_last_for_all_available_problems(user_id)
     submissions = Array.new
     problems = Problem.find_available_problems
diff --git a/app/views/report/_date_range.html.haml b/app/views/report/_date_range.html.haml
new file mode 100644
--- /dev/null
+++ b/app/views/report/_date_range.html.haml
@@ -0,0 +1,18 @@
+
+= form_tag({action: :user_stat_max })  do
+  .submitbox
+    %table
+      %tr
+        %td{colspan: 6, style: 'font-weight: bold'} Query maximum score in submission range
+      %tr
+        %td{style: 'width: 120px; font-weight: bold'} Submission ID:
+        %td{align: 'right'} From date:
+        %td= text_field_tag 'start_date', params[:start_date]
+        %td Time:
+        %td= text_field_tag 'start_time', params[:start_time], style: 'width:40px'
+        %td= submit_tag 'query'
+      %tr
+        %td 
+          %td{colspan: 5} Leave blank date and/or time for no condition
+          %br/
+
diff --git a/app/views/report/login_stat.html.haml b/app/views/report/login_stat.html.haml
--- a/app/views/report/login_stat.html.haml
+++ b/app/views/report/login_stat.html.haml
@@ -7,6 +7,8 @@
   = link_to '[Submission]', :action => 'submit_stat'
   = link_to '[Login]', :action => 'login_stat'
 
+=render partial: 'date_range'
+
 %table.info
   %thead
     %tr.info-head
diff --git a/app/views/user_admin/_submission_range.html.haml b/app/views/user_admin/_submission_range.html.haml
new file mode 100644
--- /dev/null
+++ b/app/views/user_admin/_submission_range.html.haml
@@ -0,0 +1,18 @@
+
+
+= form_tag({action: :user_stat_max })  do
+  .submitbox
+    %table
+      %tr
+        %td{colspan: 6, style: 'font-weight: bold'} Query maximum score in submission range
+      %tr
+        %td{style: 'width: 120px; font-weight: bold'} Submission ID:
+        %td{align: 'right'} From:
+        %td= text_field_tag 'since_id', params[:since_id], style: 'width:40px'
+        %td To:
+        %td= text_field_tag 'until_id', params[:until_id], style: 'width:40px'
+        %td= submit_tag 'query'
+      %tr
+        %td 
+        %td{colspan: 5} Leave blank for uncondition
+
diff --git a/app/views/user_admin/user_stat.html.erb b/app/views/user_admin/user_stat.html.erb
--- a/app/views/user_admin/user_stat.html.erb
+++ b/app/views/user_admin/user_stat.html.erb
@@ -1,4 +1,9 @@
 <h1>User grading results</h1>
+<h2>Show scores from latest submission</h2>
+
+<%= render 'submission_range' %>
+
+<p>Latest scores</p>
 
 <table class="info">
 <tr class="info-head">
diff --git a/app/views/user_admin/user_stat_max.html.haml b/app/views/user_admin/user_stat_max.html.haml
new file mode 100644
--- /dev/null
+++ b/app/views/user_admin/user_stat_max.html.haml
@@ -0,0 +1,44 @@
+%h1 User grading results
+%h2 Show max scores in submission range
+
+- if @problem and @problem.errors
+  =error_messages_for 'problem'
+
+= render partial: 'submission_range'
+
+- if @log
+  %h3 Import log
+  %pre.import-log
+    = @log
+
+%p= link_to '[Show only latest submissions]', controller: :user_admin, action: :user_stat
+
+%table.info
+  %thead
+    %tr.info-head
+      %th User
+      %th Name
+      %th Activated?
+      %th Logged in
+      %th Contest(s)
+      - @problems.each do |p|
+        %th= p.name
+      %th Total
+      %th Passed
+  %tbody
+    - @scorearray.each do |sc|
+      %tr{class: cycle('info-even','info-odd')}
+        - total,num_passed = 0,0
+        - sc.each_index do |i|
+          - if i == 0
+            %td= sc[i].login
+            %td= sc[i].full_name
+            %td= sc[i].activated
+            %td= sc[i].try(:contest_stat).try(:started_at)!=nil ? 'yes' : 'no'
+            %td= sc[i].contests.collect {|c| c.name}.join(', ') 
+          - else
+            %td= sc[i][0]
+            - total += sc[i][0]
+            - num_passed += 1 if sc[i][1]
+        %td= total 
+        %td= num_passed
diff --git a/config/routes.rb b/config/routes.rb
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,13 +1,13 @@
 CafeGrader::Application.routes.draw do
   get "report/login"
 
-  get "logins/list"
-
   resources :contests
 
   resources :announcements
   resources :sites
 
+  resources :problems, only: [:show]
+
   # The priority is based upon order of creation:
   # first created -> highest priority.