Due to the high rate of migration within the country, given the social and economic difficulties faced by many Colombians, in 2015 the study population was scattered from 1 to 15 localities and from 14 kindergartens to more than 200 public and private schools, mostly in the Usaquen´s locality, with great variability ranging from the facilities, resources, length of the school day, number of children in each classroom, to the training of teachers and their low motivation and availability time to perform any initiative (data obtained from focus groups conducted in schools). For these reasons, it is not feasible to carry out a second educational intervention in schools. However, the investigators believe that a community-based intervention is an excellent choice for tracking this population.