This study examines the effectiveness of a single-session group motivational enhancement intervention with college students adjudicated for violation of alcohol policy. The intervention consisted of a timeline Followback assessment of drinking, social norms re-education, decisional balance for behavior change, relapse prevention, expectancy challenge, and the generation of behavioral goals. All participants evidenced significant reductions in drinking from baseline through one and three month follow-up. Male participants and frequent binge drinkers showed the largest and most sustained reductions in drinking behavior. The results of this study provide tentative evidence for the effectiveness of group motivational enhancement interventions with adjudicated students. (Contains 2 tables and 2 figures.)