Abstract The aim of this study was to identify the characteristics of social networks of 320 high school students involved in bullying behaviors, in order to observe possible differences in the structure of their relationships according to the roles assumed (observer, aggressor, victim, aggressorvictim). Using an ex post facto design analyzed the properties of the networks according to indicators of degree, closeness and betweenness, the comparison of these properties are fulfilled with nonparametric tests of differences between groups. The results indicate similar performance of the network characteristics regardless of the role assumed, there was a large number of aggressor-victim as central actors in networks like victims with important social positions.