PeaceBuilders is a schoolwide violence prevention program for elementary schools (grades K-5). PeaceBuilders attempts to create a positive school climate by developing positive relationships between students and school staff; directly teaching nonviolent attitudes, values, and beliefs; and providing incentives for young people to display these behaviors at school, in the community, and at home. PeaceBuilders introduces a common language to a school centered on six principles: praise people; avoid put-downs; seek wise people as advisers and friends; notice and correct hurts we cause; right wrongs; and help others. Activities and rewards designed to teach and encourage these “peace-building” behaviors are woven into the school’s everyday routine with the participation of all staff in the school, including teachers, classroom aides, administrators, librarians, nurses, playground monitors, and any others who regularly interact with students. Targeted outcomes include improved social competence, more frequent positive and prosocial behavior, and reduced aggression.