About 30 percent of American children are regularly involved as bullies, victims, or both. Despite this number, bullying behavior is rarely detected by teachers and is even less frequently taken seriously. The consequences of bullying are far reaching, from lower attendance and student achievement to increased incidence of violence and juvenile crime. The dynamics of bullying behavior need to be understood and taken seriously if schools are to be safe and effective. This booklet provides an overview of what is currently known about bullying behavior and successful efforts to address it. Topics discussed include research findings; schoolwide efforts undertaken to prevent bullying; what parents, teachers, and counselors can do to address bullying; what policymakers should consider; and potential pitfalls. The approaches taken by five schools (including one district and state organization) are described to illustrate the ways school staff members implemented and adapted a program for their students' needs. The booklet ends with a list of the programs mentioned along with contact information, a technical assistance resource, and reading resources. A list of questions and worksheet to aid in choosing a bullying prevention program are also provided. (Contains 27 references.) (RT)