Several sexuality education programs have been evaluated, and many include a combination of abstinence messages for sexually inexperienced teens and messages about contraceptive use for sexually experienced teens. Slightly more than half of these programs show some positive impacts on reproductive health outcomes for at least some populations (Aarons et al., 2000; Eisen, Zellman & McAlister, 1990; Kirby, 2001; Thomas et al., 1992). Several HIV education programs were evaluated and slightly more than half of them show some positive impacts on sexual activity and contraceptive use for at least some populations (St. Lawrence et al., 1995; Jemmott III,.
