Here are some suggestions from the National Campaign to Prevent Teenage Pregnancy. Be clear about your own sexual values and attitudes. Let your teen know what you think about being sexually active as a teen. Set realistic limits in a relationship. Talk with your children early and often about sex, and be specific.
Kids have a lot of questions about sex.
Make conversations honest, open and respectful. Use situations on television if you need an excuse for the conversation. Supervise your adolescents. Establish rules, curfews and standards of behavior. Know your children's friends and their families.