The Olweus Program (pronounced Ol-VAY-us) is a comprehensive approach that includes schoolwide, classroom, individual, and community components. The program is focused on long-term change that creates a safe and positive school climate. It is designed and evaluated for use in elementary, middle, junior high and high schools (K-12). The program’s goals are to reduce and prevent bullying problems among schoolchildren and to improve peer relations at school. The program has been found to reduce bullying among students, improve the social climate of classrooms, and reduce related antisocial behaviors, such as vandalism and truancy. The Olweus Program has been implemented in more than a dozen countries around the world, and in thousands of schools in the United States.