This report is the result of a project to investigate through a sociocultural lens whether girls-only, informal STEM experiences have potential long-term influences on young women's lives, both in terms of STEM but also more generally. The authors documented young women's perceptions of their program experiences and the ways in which they influenced their future choices in education, careers, leisure pursuits, and ways of thinking about what science is and who does it. This report includes the questionnaire used in the study.