The purpose of the study was to investigate the applicability of the College Adjustment Self-efficacy Scale (CASES) to a Turkish sample. The CASES (Hirose, Wada, & Watanabe, 1999) measures the degree of confidence in the basic skills necessary to complete one's college career. A total of 492 freshman students at Middle East Technical University aged 16-29 years filled in the Turkish translation of the CASES, which included 21 items. The alpha coefficient for the Turkish version of CASES was .82 and CASES correlated - .35 with the Rosenberg Self-Esteem Scale. The sum of the 21 item scores was used as the CASES score. Confirmatory factor analysis of the CASES showed that the scale consisted of three factors: Self-controlled persistence of activities, Judgmental ability based on objective information, and Self-adjustment in human relations.