Bullying has been defined as the intentional use of force, not occasionally, but maintained over a period of time, with the objective of generating a negative impact on the victim from a powerful position, and therefore unevenness between participants tolerated among a group of peers. As an initial approximation to establishing prevalence in the Valle del Cauca Department, a first cut was performed from a cross-sectional study with an estimated population of 2000 schoolchildren from grades 5 to 10. The first cut corresponded to a population of 366 schoolchildren, 32,2% from 9th grade with an average age of 13. [ED±1,82], in the distribution, 51.4 % were female. The reported prevalence is of verbal bullying 90.1%, Social bullying 86.2 %, Physical bullying 71.3 %, and intimidation by coercion 29.6 %. These early findings make clear the need to implement intervention strategies to strengthen coping capacities against offences, ridicule, and criticism that bullies exert, but complemented by strategies guided at not allowing or encouraging the use of violence, generating both protective and prosocial behavior.