For a successful transition to adulthood, young people need opportunities to be responsible, caring, participating members of society. A study was designed to test the effectiveness of peer discipline control in seventh grade classrooms. The context was a language arts class in which the students were learning parliamentary procedures. A class club was formed, with officers serving on a rotating basis. The purpose of the club was not only to teach rules of order and decision making in organizations, but also to apply a code of behavior to the classroom situation. It was the students' responsibility to not gain demerits for violating the behavior code. Club officers helped to interpret and enforce the code. A survey showed that all of the students participating in the clubs felt that their attitudes about peer participation and responsibility had improved. As a result of this finding, peer participation in classroom discipline is recommended as a key to positive junior high school student behavior. (FG)