Peer victimization has received much attention from researchers and educators over the last decade, since it is a problem that affects children and adolescents. As more time-extensive programs do not seem to be used in schools, in this article the "EQUIP" program for "Educators" is proposed as an instrument for the prevention of peer bullying and social exclusion. Its three components, anger management and thinking error correction, social skills and social decision making might be useful to work on various aspects involved in victimization situations between peers. The training was carried out in two groups of students in Spanish Secondary education between the ages of 14 and 17 years. Results of the study in relation to thinking error correction, peer bullying and social exclusion incidence, classmates' behavior in victimization situations and classroom climate are presented and discussed. (Contains 1 note, 4 tables, and 2 figures.)