Class-wide Function-related Intervention Teams (CW-FIT) is a classroom management intervention in which teachers incorporate positive behavior support (PBS) principles by teaching specific classroom expectations and providing feedback on student behavior as part of an interdependent group contingency. Interventions like CW-FIT may be helpful for students with emotional or behavioral disorders (EBD), as such students often struggle to succeed in school. In the present replication study, researchers examined the effects of CW-FIT in a self-contained U.S. elementary EBD classroom. One teacher and her five students with EBD participated. Researchers used an A-B-A-B withdrawal design with maintenance probes to examine changes in students' on-task behavior, as well as teacher praise and reprimand rates. Results revealed the teacher was able to implement CW-FIT with fidelity with corresponding increases in student on-task behavior and teacher praise, though there was little effect on teacher reprimands. The teacher and the students found CW-FIT to be socially valid. Results suggest CW-FIT can be an effective classroom management intervention in self-contained elementary EBD classrooms.