This report presents findings from an IES-sponsored study of a violence prevention strategy designed to improve school safety in middle schools. The strategy combines a classroom curriculum-based approach (Responding in Peaceful and Positive Ways, RiPP) and a whole-school approach (BEST Behavior). The curriculum-based approach aims to improve students' social and problem solving skills for dealing with conflict and managing aggression. The whole-school approach seeks to influence the school environment through strategies such as increasing supervision of the school grounds, clarifying rules and consequences for student behavior, establishing reward systems to encourage positive behaviors, and training staff in classroom management.