diff --git a/judge/scripts/std-script/grade b/judge/scripts/std-script/grade
deleted file mode 100755
--- a/judge/scripts/std-script/grade
+++ /dev/null
@@ -1,106 +0,0 @@
-#!/usr/bin/ruby
-
-CORRECT_MARK = 'P'
-INCORRECT_MARK = '-'
-TIMEOUT_MARK = 'T'
-RUN_ERROR_MARK = 'x'
-
-def log(str='')
-  if ENV['TALKATIVE']!=nil
-    puts str
-  end
-  if ENV['GRADER_LOGGING']!=nil
-    log_fname = ENV['GRADER_LOGGING']
-    fp = File.open(log_fname,"a")
-    fp.puts("grade: #{Time.new.strftime("%H:%M")} #{str}")
-    fp.close
-  end
-end
-
-def char_comment(comment)
-  if comment =~ /[Ii]ncorrect/
-    INCORRECT_MARK
-  elsif comment =~ /[Cc]orrect/
-    CORRECT_MARK
-  elsif comment =~ /[Tt]ime/
-    TIMEOUT_MARK
-  elsif res = /^[Cc]omment:(.*)$/.match(comment)
-    res[1]
-  else
-    RUN_ERROR_MARK  # these are run time errors
-  end
-end
-
-problem_home = ENV['PROBLEM_HOME']
-require "#{problem_home}/script/test_dsl.rb"
-load "#{problem_home}/test_cases/all_tests.cfg"
-problem = Problem.get_instance
-
-if problem.well_formed? == false
-  log "The problem specification is not well formed."
-  exit(127)
-end
-
-all_score = 0
-all_comment = ''
-(1..(problem.runs.length-1)).each do |k|
-  log "grade run #{k}"
-  run = problem.runs[k]
-  run_score = nil
-  run_comment = ''
-  run_comment_short = ''
-  run.tests.each do |test_num|
-    result_file_name = "#{test_num}/result"
-    if not File.exists?(result_file_name)
-      run_comment += "result file for test #{test_num} not found\n"
-      run_comment_short += RUN_ERROR_MARK
-      log "Cannot find the file #{test_num}/result!"
-    else
-      result_file = File.new(result_file_name, "r")
-      result_file_lines = result_file.readlines
-      if result_file_lines.length>=2
-        current_run_score = result_file_lines[1].to_i
-        run_comment += result_file_lines[0]
-        run_comment_short += char_comment(result_file_lines[0].chomp)
-      else
-        current_run_score = 0
-        run_comment += "result file for test #{test_num} error\n"
-        run_comment_short += RUN_ERROR_MARK
-        log "Error in #{test_num}/result!"
-      end
-
-      # the score of this run should be the minimum of the score for
-      #   each test case
-      if (run_score==nil) or (run_score>current_run_score)
-        run_score = current_run_score
-      end
-      result_file.close
-    end
-  end
-
-  run_result_file = File.new("result-#{k}", "w")
-  run_result_file.write run_score
-  run_result_file.write "\n"
-  run_result_file.close
-
-  run_comment_file = File.new("comment-#{k}", "w")
-  run_comment_file.write "#{run_comment}\n"
-  run_comment_file.close
-
-  all_score = all_score + run_score
-
-  # append comment for test run with many test cases
-  if run.tests.length > 1 
-    run_comment_short = '[' + run_comment_short + ']'
-  end
-  all_comment += run_comment_short
-end
-
-result_file = File.new("result", "w")
-result_file.write all_score
-result_file.write "\n"
-result_file.close
-
-comment_file = File.new("comment", "w")
-comment_file.write "#{all_comment}\n"
-comment_file.close