Bullying is a widespread problem in schools. This book provides current explanations for the phenomenon of bullying in schools. It is shown that bullying does not only take place between victims and perpetrators, but that usually all members of a school class can be involved. Accordingly, it is described what consequences bullying can have for all those involved.  Secondly, general prevention and intervention approaches are described and eleven anti-bullying programs are presented in detail. A special focus of the book is on bullying aftercare concepts as well as practice-related digressions by proven experts.