/home/users/1/lolipop.jp-withmama/web/ol/wp-content/themes/child/withnet/kanrisya/mothertongue_tutor.inc
稼働可能となる講師の最低数。全ての母国語が対象 10人

除外するmothertonguearray(4) {
  [0]=>
  string(13) "administrator"
  [1]=>
  string(15) "Sample_language"
  [2]=>
  string(7) "ENGLISH"
  [3]=>
  string(7) "English"
}