What we all know in our gut but aren't told by anyone else. from Heritage.org:
Studies have shown that abstinent teens report, on average, better psychological well-being and higher academic achievement than those who are sexually active. Delaying the initiation of or reducing early sexual activity among teens can decrease their overall exposure to risks of unwed childbearing, STDs, and psycho-emotional harm. Authentic abstinence programs are therefore crucial to efforts aimed at reducing unwed childbearing and improving youth well-being.
Opponents of abstinence education contend that these programs fail to influence teen sexual behavior. At this stage, the available evidence supports neither this assessment nor the wholesale dismissal of authentic abstinence education programs. (full article)