Group contingencies have been indicated to be effective in reducing disruptive behavior and increasing academic engagement in school settings. Previous research has demonstrated their efficacy with a wide range of student ages, but there have been few studies with older students who engage in severe disruptive behavior. In the current study, we implemented an interdependent group contingency in three high school classrooms of students aged 14-19 years with histories of delinquency, emotional and behavioral disorder diagnoses, or both. Results indicated that interdependent group contingencies can be effective in reducing the disruptive classroom behavior of these students. Implications for future research and special considerations for this population are discussed.