This action research project evaluated the effectiveness of a program to enhance students' social skills with peers. The targeted population was comprised of elementary and junior high school students in an economically diverse, predominantly blue collar community in central Illinois. The problem of inability to problem solve, listen actively, resolve conflict, and deal with anger was documented by means of teacher observational checklists of student behavior, office disciplinary referrals, teacher surveys, and teacher journal entries. The 5-month intervention was comprised of cooperative learning activities, conflict resolution and anger management techniques, and a modified school-based student management program. Program effectiveness was assessed by comparing pre- and post-intervention measures in the number of disciplinary referrals, behavior checklists, student interviews, and teacher observations recorded in journal entries. Post-intervention data indicated that students showed increased interpersonal relationship skills and improved abilities to manage conflict. (Fourteen appendices include data collection instruments and sample classroom materials. Contains 20 references.) (KB)