This investigation study, of pre-experiment type, was realized in Qirihuac, Bello Horizonte and Santa Rosa’s kindergardens at Valle Santa Catalina, during June - October of 2008, with the purpose of determining the educational program's effectiveness “Lonchera Sanita” in the knowledge level on lunch boxes in mothers and/or people who take care of preschool students with nutrition problems. The sample was constituted of 27 mothers and/or people who take care of preschool students who obeyed the inclusion criteria mentioned in the investigation. To obtain the data we used the instrument: Rank of Knowledge on Lunch Boxes (RKLB), being the obtained information processed and analyzed by: The statistical test for correlated data “t de student”, the results are presented in simple tables, double entrance tables and graphics. The following conclusions were reached after the analysis: -...