For a long time, most intervention initiatives on mental health in schools have focused on the causality-effect model of a certain number of school-related problems, considering, for example, the various symptoms, and providing limited responses to the problems observed. As I have shown, other approaches to mental health in schools have developed based on a comprehensive and active approach to school-related health issues. They have focused on two directions: one focused on problem management, i.e. an immediate response, and the other focused on prevention, i.e. a more comprehensive approach to mental health as an essential aspect of education. Today, schools are more widely recognized as the ideal place for prevention and promotion of mental health as an integral part of their educational mission. The initiatives I have presented show not only that it is possible to deal with the emergence of problems and their treatment in schools, but also to develop real models of health education in schools. These new approaches, focused on mental health, now provide new means of action in schools, making mental health an essential factor in educational success.