The curriculum is packaged without contraceptive information. A reality-based program with a strong emphasis on abstinence was followed up after six months. Much of the knowledge gained was retained. In addition, program participants were less likely than comparison subjects to report the initiation of sexual intercourse within six months following the program. Kirby, Douglas, et al.
Unprotected intercourse seems to have been reduced.
Kirby, Douglas, et al. Commissioned by the CDC, this is one of the most comprehensive and current reviews of existing studies. The authors reviewed, analyzed, and summarized 23 studies of school-based programs published in professional journals and measured program impact on behavior. Some programs were found to be effective in reducing exposure to unintended pregnancy and STIs, and no program increased or hastened sexual intercourse among participants. Vincent, Murray L. et al.