The purpose of this study was to disclose the relationship between developmental disabilities and school avoidance tendencies in university students. Data of 284 university students who answered questionnaires anonymously were analyzed. As a result of the cluster analysis, students who frequently feel difficulty in all measures had the highest school avoidance tendencies. As a result of the multi-regression analysis, it was indicated that “carelessness” had influence on “attitudes of school avoidance tendency”, and that “anxiety and depression” and “carelessness” had influence on “feelings of school avoidance tendency”. Focusing on the students’ self-management abilities as well as interpersonal relationships and psychological problems is suggested to be effective when supporting students with school avoidance tendencies.