The book addresses the issue of violence in adolescence and the peer approach. It provides detailed theoretical discussions on peer involvement, or peer education, as a pedagogical method that is increasingly applied in various projects. The peer approach is examined in terms of its practical relevance for participatory work with children and adolescents, particularly regarding its potential for violence prevention. The topic of youth violence, which has increasingly come into the spotlight of public attention and media, is presented and analyzed with consideration of its causes, emergence, and actual prevalence. Particular aspects of adolescence, current violence statistics, and violence in schools are central to this discussion. A special focus of the book is on the connection between peer education and violence prevention.