Book excerpt: Now revised and expanded, this volume explains how to design, implement, and evaluate a comprehensive, integrated, three-tiered (Ci3T) model of prevention. Rather than presenting a packaged program, the book provides resources and strategies for designing and tailoring Ci3T to the needs and priorities of a particular school or district community. Ci3T is unique in integrating behavioral, academic, and social–emotional components into a single research-based framework. User-friendly features include tools for collecting and using student and schoolwide data; guidance for selecting effective interventions at each tier; detailed case examples; and tips for enhancing collaboration between general and special educators, other school personnel, and parents. In a convenient large-size format, the volume includes several reproducible forms that can be downloaded and printed for repeated use. Prior edition title: Developing Schoolwide Programs to Prevent and Manage Problem Behaviors. New to This Edition *Updated step-by-step approach reflecting the ongoing development of Ci3T. *Chapter on evidence for the effectiveness of tiered models. *Chapter on low-intensity, teacher-delivered strategies. *Chapter on sustaining effective implementation and professional development. *"Lessons Learned" feature--reflections and examples from educators in a range of settings.