This book contains, in addition to the results of an extensive literature review, input from teachers, school administrators, members of community-based organizations, employees and volunteers at social service agencies, health department personnel, program planners and practitioners, and researchers from universities across the country. Chapter 1 reviews general principals of intervention planning, implementation, and evaluation. Chapter 2 builds on the experiences of those who have worked to prevent violence by children and adolescents. It discusses in-depth the best practices of four key youth violence prevention strategies: parent- and family-based, home-visiting, social-cognitive, and mentoring. It also documents the science behind those best practices, and includes information about programs that have used the strategies. Appendix A provides a fact sheet on the problem of youth violence, useful in formulating a convincing appeal for support from organizations and community leaders. Appendix B contains an overview of the public health approach, the process by which public health problems are identified and addressed. Tables, references, resources, notes, appendixes