Objectives: To present a new practice for promoting sexual health among youth, and a pilot evaluation. The Afterschool Health and Sexuality Education Project is a capacity-building program that provides staff training, technical assistance, resource materials, and policy recommendations to create organizational change that facilitates staff members' abilities to promote sexual and reproductive health for adolescents., Method: The evaluation included assessment of (a) sexual health educational materials, resources, and referral lists; (b) organizational policies that guide provision of sexual information and referrals; and (c) communication about sexual health. Data were collected prior to intervention, 7 months later, and 1 year later using anonymous surveys of staff and adolescents, and researcher observations., Results: Results indicate that organizational support for addressing youth sexual health increased as did communication between staff and youth, with decreased barriers. Most, but not all, improvements were maintained at the 1-year follow-up. Organizational policies that support youth sexual health and the availability of educational materials, resources such as condoms, and referral lists also increased and were maintained at follow-up., Conclusions: Organizational systems change may create a broader, more sustainable environment for increasing communication between youth and adults and increasing resources to promote sexual health., (© 2013 Society for Public Health Education.)