This book analyzes research from more than 100 studies on classroom management to assess how classroom management affects student achievement, techniques that teachers find most effective, and how important schoolwide policies and practices are in setting the tone for individual classroom management. Findings are applied to a series of action steps for educators to use: get the classroom management effort off to a good start; establish effective rules and procedures; implement appropriate disciplinary interventions; foster productive student-teacher relationships; develop a positive "mental set"; help students contribute to a positive learning environment; and activate schoolwide measures for effective classroom management. The book provides real stories (Contains 116 references.) (SM)