A revised and updated edition of the best-selling guide for schools implementing PBIS Tier 1 PBIS (positive behavior interventions and supports) is the most important tool educators have to deal with disruptive student behaviors. This revised and updated handbook provides detailed guidelines for implementing and sustaining PBIS for schools and teams. New in this edition is a chapter addressing inequity and bias in behavior referrals and discipline; a tiered fidelity inventory (TFI) to evaluate adherence to PBIS practices; different methods of data collection; and new research on sustainability. Positive school climates are not achieved through expulsions, suspensions, or detentions, but instead through collective analysis and data-driven decision-making. Downloadable digital content offers a PDF presentation to aid staff buy-in and customizable forms to help manage data and assess progress with ease.