The current research aims to study the effectiveness of Rush model in the grading scale of poor school adjustment College Maladjustment test of the second version of Minnesota Multiphasic Personality Revision Minnesota test. It also aims to test the effectiveness of the sample of study on the results of the grading scale poor school adjustment using the accuracy Criteria of the standard error and stability and information function. The search results after staging reach a form Summary of the scale process saves time and effort after the staging process listed unit Logit so were some of the vocabulary is appropriate to exclude according to suitability index note that the deletion of the vocabulary has not been on a diagnostic basis, according to statistical values for Bilog, and therefore an instrument enjoy a high level of accuracy extend specialist holistic perspective for all effects and health problems and social and psychological responsible for poor school adjustment, note that access to treatment is successful but accurate assessment that gives reliable results in the treatment process. As it turns out that the best size of the sample in the staging process is (700) after any medium samples tested small samples (300) and large samples (2000) and in accordance with the Criteria for the three-precision, a standard error and stability and function information.