Now in a fully revised and updated second edition, this authoritative resource provides a complete toolkit for designing and implementing an evidence-based school safety plan. Foremost experts guide practitioners to understand and prevent violence, bullying, and peer harassment in grades K-12. Best practices are reviewed for creating a positive school climate and establishing effective security and crisis response procedures. The authors describe ways to identify and support behaviorally at-risk students across multiple tiers of intervention, beginning with universal screening. In a convenient large-size format, the book includes reproducible planning tools. Purchasers get access to a Web page where they can download and print the reproducible materials. This edition: (1) reflects over 15 years of research advances, new initiatives, and the growth of universal prevention models; (2) grounded in current positive behavioral interventions and supports (PBIS) practices; also incorporates restorative discipline, social-emotional learning, and trauma-informed practices; (3) state-of-the-art behavioral screening and threat assessment methods are integrated throughout; and (4) discussions of timely topics, including cyberbullying, the role and limitations of policing in schools, and racial/ethnic disparities in discipline.