Introduction. The research presented provides partial evaluation results of Prevention Program Among-All of the International Man Association Project. It has been applied to students, families and teachers of educational communities in secondary schools. Objective. Present the results of the research project evaluation Prevention Program together, the International Association Proyecto Hombre. Materials and methods. The methodology combines quantitative tools as questionnaire, qualitative strategies and a focus group in a longitudinal study conducted over four years. Results. The results underline the existence of high levels of work efficiency radiating from the school community to families. Conclusion. Producing dramatic changesof opinion and attitude in participants whichfavour the adoption of preventive behaviors in young people and their families.