Girl Neighborhood Power (GNP) is an out-of-school positive youth development program for girls ages 9 to 14. The current study used both quantitative and qualitative research methodologies to examine the types of activities offered through GNP and how GNP assists girls in living healthy lives. The program assists girls living in low-income neighborhoods by providing adult supports, positive peer interaction, and exposure to community service, career building, and knowledge they would not otherwise have. The program seems to have positively influenced girls psychological and social adjustment.