Abstinence education encourages unmarried teens to refrain from premarital sex, for reasons of emotional and physical health. I would describe the negative rammifications of increased sexual risks taken by those who go through abstience education (4x more likely to try anal, 6x more likely to try oral without any safe sex practices) but apparently describing sex acts in a encyclopedic manner is banned. Please read the usatoday link below. 
- "Abstinence Programs Show Promise in Reducing Sexual Activity and Pregnancy Among Teens," an article printed by Family Research Council, states, an abstinence program for girls in the Washington D.C. area called, Best Friends, reported only one out of 400 girls become pregnant since the program began (1). "Elayne Bennett, director, says that between 20 and 70 pregnancies are common for the same sized group of fifth to ninth grade girls in the District of Columbia" (1). Upon adopting an abstinence-only curriculum by Teen-Aid, Inc., entitled Sexuality, Commitment, and Family, at San Marcos Junior High in San Marcos, California only 20 girls became pregnant in two years compared to 147 girls the year before (1). Nathan Hale Middle School in a Chicago suburb had a number of already pregnant girls at which time they adopted an abstinence program. Many parents were skeptical until the school graduated three pregnancy-free classes in a row (2).