One hundred sixty-three experienced, knowledgeable, elementary and secondary teachers were asked to identify classroom management strategies they believed to be most crucial to their teaching effectiveness. In rank order, the eight most frequently selected managerial strategies were: (1) using positive reinforcement; (2) applying logical consequences to misbehavior; (3) establishing and maintaining group cohesiveness; (4) establishing and maintaining productive group norms; (5) communicating acceptance of individual students as persons of worth and dignity regardless of behavior; (6) using time out and withdrawal of rewards as responses to inappropriate behavior; (7) employing problem-solving classroom meetings; and (8) establishing clear expectations and enforcing rules. There was a high degree of concurrence among the teachers on the effective methods, but their choices were pluralistic, not tied to any one management approach. Summaries of respondents' strategies are included, with a list of the references most often cited by respondents in their descriptions. (JD)