The results of an erlier project "Implementation and evaluation of quality criteria concerning the professional support for violent children and adolescents" indicate that professionals in the context school (e.g. teachers) show an increased need of acquiring a wider range of options for dealing with phenomena related to violence in their schools. Within this project, a comprehensive conception which consider both the need for prevention and the need for intervention. The Main objecti was prevention of violence or violent behavior in schools by promoting pupils’ resilience and life skills. With focussing on the strengths of the children and adolescents a contribution to counteract social processes of exclusion and stigmatization which also use to occur in the organizational framework of the “institution school”. The project coaching the “institution school” in dealing with the great variety of the phenomenon of violence. In the Swedish part of the project used the method of research circles with teachers and other school staff, interviews with principals, interviews and questionairs with pupils, toolbox, mapping.