The Resolving Conflict Creatively Program (RCCP) is a K-12 program characterized by a comprehensive, multi-year strategy for preventing violence and creating caring and peaceable communities of learning that improve school success for all children. First developed as an initiative of the New York City Public Schools and the Educators for Social Responsibility NYC chapter (ESR Metro) in 1985, RCCP now serves more than 400 schools in 16 urban, suburban, and rural school districts across the United States. Throughout its history, local sites have evaluated the effectiveness of RCCP in their settings and how well RCCP met local goals and objectives. While the research questions have differed somewhat from site to site, there is sufficient similarity in the results to determine that RCCP is effective. In this article, the results of individual assessments are presented and trends across sites are noted.