Violent prevention research findings suggest different key aspects for the application of a powerful prevention strategy. The project tries to tackle the complexity of supporting a healthy mental development in children while also meeting the requirments for succesful prevention. Resilience promotion proved to be a suitable concept for implementing a violence prevention strategy in secondary schools.  This two-year practice-oriented research project, with international partners from five contries had the aim of supporting schools in developing a resilience-promoting and violence-preventing strategy in a multi-level and multi-setting approach. As a result, a toolbox for resource-oriented training in schools for teachers and pupils was created. The measures undertaken during the project have been evaluated empirically and the iflunce of resilience-promoting acivities in school has been assessed. Different national implementations in easch country are presented as well as international comparisons, reflections and perspectives.