For young people, the school represents the place that gives the opportunity to build models of coexistence through the teaching learning of daily values. Among the main functions of the school are to form integrally, enrich and protect their students into an environment where respect and full exercise of their rights reigns. However, nowadays, millions of students are affected by the school bullying phenomenon, which has become in one of the biggest problems in the educational field.

This type quasi-experimental research aims to determine what effects has the implementation of the psycho-educational intervention program "Youth Sotista: harassment school zero", in adolescents of Junior High Official School in the district of San Miguelito. For these purposes, we apply the Cisneros Self-Test of bullying.

Regarding the results, we found that the psycho-educational intervention program "Youth Sotista: harassment school zero" was effective, since significant differences were obtained in the students: in the global index of bullying, in the intensity of bullying and in all components of bullying before and after program implementation.