method for adjustment difficulty level of making question

To improve the credibility to adjust the difficulty of the test questions to stabilize the once differentiated pass rate of the performed tests, the present invention is the first step that the scoring opportunities discrimination data of the test performed is input; Recurrence times the reference corresponding to the pass rate target set group and the pass rate of the marking discrimination data are extracted, and a second step where the target point set in accordance with the average score of the reference Recurrence; 3 is doedoe each question of the reference Recurrence separated by a first difficulty level in accordance with the candidate star percentage of correct answers of the scoring data is separated phase rallying a reduced smart difficulty, it is the average score correction according to the rallying nine minutes steps expected percent correct change step; The corrected average score and the stage 4 is stage two minutes munhangsu constituent ratio of the rallying smart raid correction according to the deviation between the target point; And a base item questions from the plurality of questions members provides a test questions difficulty adjusting method for a fifth step is divided as a separator stage of the smart difficult to be extracted according to the configuration stage the corrected nine minutes munhangsu ratio.