This publication presents a system of proactive classroom management for use in elementary school, grades K-6. Characteristics of the proactive concept are described as: (1) planning for prevention rather than reaction to behavior problems; (2) considering the classroom as a total process of facilitating achievement as well as appropriate behavior; (3) dealing with the entire class rather than with individual student behavior; and (4) defining behavior management as an entire system utilizing the principles of behavior theory rather than isolated techniques. An overview is provided of behavioral principles that will give teachers a broad-based understanding of why children behave and misbehave. A classroom management system is presented based on behavioral principles. The book is organized into eight chapters: (1) The Behavior Management Hierarchy; (2) Classroom Environment; (3) Scheduling; (4) Affecting Antecedents: Rules and Routines; (5) Reinforcement Strategies; (6) Parental Involvement; (7) Using Consequences To Affect Behaviors; and (8) Concluding Remarks, consisting of a checklist to help in assessing the classroom and for troubleshooting behavior problems. (LL)