Abstract The aim of this investigation was not only to identify the prevalence of bullying behavior whithin a group of teenagers from primary and secondary education, but to establish relationships between the type of actor (perpetrator, victim, witness and perpetrator-victim) with gender, age and the level of educational training as well. 120 students were evaluated in a public educational institution by a correlational design, by using a questionnaire for the detection of violence prepared by the Ombudsman of Spain. The data were analyzed with SPSS 17.0 using the chi-square (x2) and the Spearman correlation coefficients. The prevalence of abuse was 69,2%, mainly verbal and social forms of violence. It stands out the direct and indirect physical abuse perpetrated by women and a large number of students with mixed role of aggression and victimization. Gender and age did not show relationships with bullying, but abusive behavior is significantly associated to the training level. Resumen El objetivo de esta investigacion consistio en identificar la prevalencia de la conducta bullying en un grupo de adolescentes de educacion basica y media, asi como establecer relaciones entre el tipo de actores (agresor, victima, testigo y agresor-victima) con el genero, la edad y el nivel de formacion educativa. Se evaluaron 120 estudiantes de una institucion educativa publica mediante un diseno correlacional, aplicando el cuestionario para la deteccion de violencia elaborado por el defensor del pueblo de Espana. Los datos se analizaron con el SPSS 17.0, aplicando el Chi cuadrado de Pearson (x2) y el coeficiente de correlacion de Spearman. La prevalencia del maltrato fue del 69,2%, predominando las formas de violencia verbal y social. Sobresale tambien el maltrato fisico directo e indirecto, perpetrado por mujeres y un numero elevado de estudiantes con rol mixto de agresion y victimizacion. El genero y la edad no muestran relaciones con el bullying, pero las conductas de maltrato se asocian significativamente con el nivel de formacion.