This unique volume reports on the largest long-term preventive intervention study ever conducted with children at risk for serious violence and poor life outcomes. From kindergarten through 10th grade, Fast Track provided multicomponent interventions to support children, families, and schools in achieving positive social, emotional, and academic outcomes. The book explores the developmental processes associated with early aggression, describes how each component of FastTrack was developed and implemented, and summarizes outcomes up to 20 years later. Vivid case studies track the impact of comprehensive school- and family-based programming on children's pathways through the elementary and high school years. The concluding chapter offers recommendations for using Fast Track components in future violence prevention initiatives.