This book, grounded in both theory and practice, addresses a serious issue that can suddenly affect everyone in a school environment: bullying among students. It provides insight into the dynamics of group processes and answers fundamental questions from a practitioner's perspective, such as: What drives students to engage in bullying? How can I recognize bullying? How should I respond? At its core is a step-by-step guide that clearly defines school responsibilities and safely guides teachers through the intervention process in cases of bullying. Realistic case studies are analyzed for teachers on a case-by-case basis. Practical assistance, including measures against cyberbullying, legal regulations, as well as literature recommendations and contact addresses, complete this school intervention book. Worksheets are provided in the appendix and online.