Religiosity, sexual activity, and contraception were examined via questionnaires and interviews in a diverse sample of 118 high school seniors. The majority reported religion to be important; importance and frequency ratings declined from private (e.g., prayer) to public (e.g., group activities) components of religion. Most were sexually active and used contraception. Nearly half acknowledged religious teachings on sexual activity, and one third believed premarital sex is proscribed. Religiosity items were negatively correlated with approval of sexual activity in hypothetical relationship scenarios, but religiosity was not related to self-reported sexual activity or contraceptive use. Participants emphasized relationships and physical health, not religious proscriptions, in their standards for sexual activity. Older adolescents may believe sexual activity is acceptable in committed romantic relationships. (Contains 3 tables and 1 note.)