The problem of school violence is multifaceted and persistent. Everyone wants to stop it, and state legislatures have spent nearly decade implementing strategies to help do just that. In the past, policymakers have focused primarily on what happens after a child actually commits a crime, but an increasing volume of research indicates that there are both strategies and programs that are effective in preventing violence before it starts. These strategies and programs can be replicated in varied settings, have scientific research to back them up and are good investments for states, particularly when resources must be allocated carefully. This publication summarizes proven approaches, provides examples of specific school-based programs, and discusses considerations for state-specific solutions.