Creating safe and supportive schools that are free from bullying, discrimination, harassment, aggression, violence, and abuse is essential to this mission. Bullying among school-age youth is a particularly serious, insidious, and pervasive problem that undermines the teaching and learning environment, increases mental health and behavior problems, diminishes school connectedness, and violates the right of students to receive equal educational opportunities in a safe environment. In response, schools have an ethical and legal responsibility to prevent bullying of any kind, ideally as part of a comprehensive approach to ensuring school safety and promoting positive behavior. The National Association of School Psychologists (NASP) developed this document to provide a guiding framework to local education agencies and school administrators for implementing effective, sustainable school-wide bullying prevention and safety efforts. [The following individuals contributed to this report: Peter Faustino, John Kelly, Melissa A. Reeves, and Susan M. Swearer.]