ABSTRACT Bullying is a social problem, unjust and immoral, resulting in interpersonal violence and affecting a high percentage of students in schools around the world. The effects of the program were measured using the Spanish version of the "European Bullying Intervention Project Questionnaire" (EBIPQ) which shows a significant decrease in students involved in bullying, both in the roles of victim, as well as aggressor/victimized. The results are discussed in terms of suitability and educational potential of the ABPP, as well as the value of the actions carried out by the educational guidance team. En 11 evaluaciones, el OBPP redujo la incidencia de acoso escolar en aproximadamente un 26%, lo que fue mayor que cualquier otro programa ampliamente difundido, como KiVA o No Trap! (Gaffney et al., 2021).