Girls Shape the Future Study: Findings and Lessons Learned from an Effort to Assess the Effectiveness of the Girls Incorporated® Will Power/Won't Power® Program.

This report presents findings from the Girls Shape the Future study, which was designed to evaluate the implementation and effectiveness of the Girls Incorporated® Will Power/Won’t Power® curriculum developed to reduce sexual intercourse, pregnancy, and sexually transmitted infections among teenage girls. The study also aimed to assess if Will Power/Won’t Power® developed views and attitudes about postponing sexual activity, improved self-perception, lowered risky behaviors, and decreased interactions with peers who engage in risky behaviors.