It is well established that for many youth with type 1 diabetes (T1D), the developmental stage of puberty is characterized by a significant deterioration in metabolic control. Previous research conducted by the Yale School of Nursing demonstrates that providing cognitive-behavioral coping skills training program (CST) as a supplement to intensive medical treatment regimen enhances physiological and psychosocial outcomes - most notably in youth as they approach adolescence. Successful CST programs studied at Yale consist of weekly, in-person group sessions over a 5-week period conducted by a clinical psychologist or social worker.