(Cyber)bullying can become a serious burden for children and young people. Often, those affected do not manage to free themselves from such a psychologically stressful situation without help. Especially in the context of schools, the question therefore often arises as to how professionals can deal with bullying, both preventively and actively, when bullying occurs. The klicksafe teacher manual "What to do in case of (cyber)bullying?" offers basic information, suggestions for practice and introduces systemic conflict management. In November and December 2020, klicksafe and its co-authors, Thomas Grüner and Jürgen Schmidt, will each offer a module on the topic of bullying based on the manual as a full-day online training course.