The article gives an overview of violence at school combined with the health of students. Based on the assumption that violence and health are two sides of the same coin, the article considers the question of the development of violence and bullying phenomena at German schools and its relation to student health. Long-term studies by the authors, such as the international Health Behavior in School-aged Children (HBSC) study, constitute the empirical basis. Prevalence and structures of student violence, as well as the relation between violence and health, are clarified and consequences for the prevention of violence and health are shown on the basis of our own empirical studies. Contrary to dramatic estimates in the media, a continuous reduction of bullying problems at German schools has been registered in recent years. In reference to the relation between violence and health, a significant correlation between dissocial behavior and health parameters was found. Victims and bully-victims show the most health problems and innocent bystanders the least health problems. In contrast to previous findings, bullies show a more positive prevailing mood. Due to the found associations between violence and health, it appears reasonable to combine violence prevention and health promotion measures to achieve sustainable prevention effects.