 The investigators objective is to develop a family-centered, community-based program for T2D prevention in peripubertal 9-12-year-old youth. Efficacious community programs for youth are not available although promising components exist, and thus the investigators propose to adapt the successful adult-focused YMCA Diabetes Prevention Program YDPP for youth and families, and assess its impact on anthropometric, behavioral and physiological outcomes in support of the design power calculation of a full-scale trial. The proposed study will evaluate the adapted program using two formats with and without mobile technologies. Secondary endpoints will include participant perceived burden, adherence, and program costs. 