Factor analyses of Behavioral Assessment System for Children (BASC) parents’ and teachers’ questionnaires have supported the multidimensional theory of human behavior. The goal of this study was to analyze the dimensional structure of the BASC parents and teachers Spanish version questionnaires. In order to do this, a randomized sample of 1176 children aged 6 to 11 years old, from the schools of Manizales City (Colombia), was selected. BASC parents and teachers questionnaires were administered to the participants. The results show that BASC parents had two dimensions: clinical and adaptive, KMO= 0.87, which explained 64% of the variance. BASC teachers had two clinical dimensions: externalizing (factor 1) and internalizing (factor 3), and he adaptive dimension was the factor 2 (75.2% of the variance). KMO was 0.90.