The psychometric properties of the Motor Behavior Checklist (MBC) were examined. A normative database of primary students (N = 841), rated by their physical educators in school settings, were used to investigate the construct validity of the MBC, the internal consistency, the reproducibility, and the interrater agreement. Psychometric results supported the model. Confirmatory factor analyses revealed a second-order model with two (Externalizing and Internalizing) broadband domains and seven problems scales: Lack of Attention (10 items), Hyperactivity/Impulsivity (14 items), Rules Breaking (7 items), Low Energy (4 items), Stereotyped Behaviors (2 items), Lack of Social Interaction (10 items), and Lack of Self-Regulation (12 items). Although MBC for children is not a diagnostic tool itself, it can provide valid complementary information on attentional, emotional, and developmental problems in children when used by physical educators in school settings.