This study explored the results of aligning functional behavioral assessment (FBA) information with positive behavior support plans (PBS plans) designed with consideration for teacher acceptability. The independent variable had the three major components of a package, including assessment and planning (FBA), training (teachers, students, and peers) and student interventions (PBS plans). The student PBS plans included a combination of selfmonitoring, teacher-peer mediated support, and positive reinforcement including praise and a token economy. Same age peers were used as change agents to mediate these PBS plans that had been designed for 2 male third grade students who were at-risk for social and academic failure. The effects of this package were examined in relationship to a response class of socially appropriate classroom behaviors. Single subject ABAB designs were used to evaluate the student interventions. The at-risk students showed immediate, marked improvement in their socially appropriate classroom behavior; treatment gains maintained as reinforcement was thinned. Social validity was measured by social comparison with a normative sample of same-aged students and subjectively by the teachers, students, and peers who participated.