The paper presents a selective overview of prevention strategies found to reduce juvenile violence and associated problems such as substance abuse, property crime, and disruptive behavior. The paper describes effective prevention strategies in three categories: Community-Wide (mentoring, supervised recreation, community policing); Family-Focused (parent education, family therapy, preschool programs); and School-Based (conflict resolution training, violence prevention counseling, social competence development, bullying reduction). It also describes an integrative model: Communities That Care. This is a systematic, theoretically grounded approach to helping communities create conditions and relationships that protect youth against drug and alcohol abuse. In addition to a core emphasis on substance abuse, the model is designed to improve family functioning, increase school achievement and generally reduce antisocial and delinquent behavior. The model is both comprehensive and flexible, and can be adapted to individual community needs and goals. Bibliography, references