Aims: To improve the performance of educational institutions, identifying of improper outputs status and influential factors on incidence of relevant indicators is essential. Therefore, this study was carried out in order to assess improper outputs and its related factors.Methods: In this cross-sectional study all the graduates of health faculty of KUMS from 1991 until the end of 2003 (n=1455) were selected by census method. A questionnaire including the determining indicators of improper outputs (unacceptable average, withdrawing, university dismiss, education quit, and major changing) and possible related factors was used for data collection. Data were analyzed using odds ratio and difference percentage by SPSS 16 software.Results: prevalence of unacceptable total average, withdrawing, university dismiss, education quit, and major changing were 9.42, 1.5, 0.1, 1.2, and 0.5%, respectively. Moreover, there was association between improper outputs and the demographic data, educational background and admission criteria.Conclusion: Gender, residence area, diploma type, marital status, admission type and history of taking guest courses in other universities, time period between two educational levels, major, level, education group, the average of former educational levels and age of entering university are effective in improper outputs status.