The COPS Office administered the school safety initiative known as Secure Our Schools (SOS) from 2002 through 2011. SOS grants enabled state, local, and tribal governments to purchase and develop school safety resources based upon a comprehensive approach to preventing school violence and individualized to the needs of the schools. At the request of the COPS Office, Circle Solutions conducted a comprehensive process evaluation of SOS programs across the country. The purpose was to identify and assess implementation of the program, success factors, challenges, safety and security strategies, and overall "best practices" of a nationally represented sample of SOS grantee programs. This book summarizes the literature review and case study findings.