The present research has as general objective to verify the motivation to learn of Elementary School II students and their self-concept related to a factor, children above ideal weight. For data collection 414 students between 10 and 16 years old participated, among them 74 overweight, obese or severely obese. The instruments applied were the Body Perception Questionnaire, Motivation Scale and Child and Adolescent Self-Concept Scale. The results show that in relation to school motivation, the identified regulation prevailed and in relation to self-concept, it was found that the personal self-concept has a high average and the social self-concept was the lowest. Pearson’s correlation showed a relationship among demotivation and family self-concept, intrinsic motivation also correlated with general and social self-concept. Finally, the regression analysis showed a dependency relationship between intrinsic motivation when dealing with general self-concept and social self-concept.