This study explored the influence of family behaviors on self-care, quality of life (QoL), and metabolic control in school-age children and adolescents with type 1 diabetes. Ninety-nine participants were recruited in the midsouth from a health science center and an affiliated diabetes camp. Warm and caring family behaviors predicted self-care behaviors and aspects of QoL for the participants. African American school-age children and adolescents had more worries related to diabetes and had poorer metabolic control than Caucasians. Nursing implications included emphasizing open family communication and providing emotional support for diabetes management to promote developmentally appropriate levels of self-care and QoL.