Book excerpt: Prevent-Teach-Reinforce: The School-Based Model of Individualized Positive Behavior Support, Second Edition is an easy-to-use practical guide to the research-proven Prevent-Teach-Reinforce (PTR) model. This book helps K-8 educators solve serious behavior challenges by guiding school-based teams through the five-step PTR process: 1) teaming and goal-setting, 2) data collection, 3) functional behavioral assessment, 4) creation of a behavior intervention plan, and 5) progress-monitoring and data-based decision making. This edition has been updated to include the latest research supporting PTR; increased emphasis on the PTR facilitator's role, collaboration, and the teacher's observations; new information on multi-tiered systems of support (MTSS) and evidence-based classroom strategies; and more detailed guidance on every PTR step. Useful forms are provided as chapter appendices and downloadable materials. Book appendices describe specific Prevent, Teach, and Reinforce strategies in depth and present rich case studies illustrating PTR in action. ;