El presente trabajo se propone transmitir las acciones derivadas de un programa de prevención de la violencia entre pares en escuelas primarias. A tal fin se describen dispositivos e intervenciones generadas a partir de observaciones áulicas y entrevistas llevadas a cabo en una escuela primaria pública. Se analizan conflictos entre lxs alumnos junto a la modalidad de intervención de lxs docentes. Las conclusiones apuntan a destacar la importancia de habilitar la palabra de lxs niñxs en el contexto escolar, así como la consideración de la necesidad que ellxs tienen de contar con la mirada y la escucha de los adultos responsables para solucionar y negociar entre ellos los conflictos derivados de la convivencia escolar. Palabras clave Niños - Maltrato - Prevención - Intervención escolar ABSTRACT PEER ABUSE PREVENTION IN SCHOOL: DEVICES AND ANALYSIS OF THE RESULTS OF AN INTERVENTION WITH CHILDREN OF 4TH, 5TH, AND 6TH GRADE OF A PRIMARY SCHOOL The present work aims to transmit the actions derived from a program of prevention of violence between peers in primary schools. To this end, devices and interventions generated from classroom observations and interviews carried out in a public primary school are described. Conflicts between the students are analyzed along with the intervention modality of the teachers. The conclusions point to emphasize the importance of enabling the children’s word in the school context as well as attending of their need of being regarded and helped from responsible adults in order to solve and negotiate between them the conflicts arising from the school coexistence. Key words Children - Abuse - Prevention - School intervention