Teens who received comprehensive sex education were 60 percent less likely to report becoming pregnant or impregnating someone than those who received no sex education.
The likelihood of pregnancy was 30 percent lower among those who had abstinence-only education compared to those who received no sex education, but the researchers deemed that number statistically insignificant because few teens fit into the categories that researchers analyzed.
Researchers studied the National Survey of Family Growth to determine the impact of sexuality education on youth sexual risk-taking for young people ages 15-19, and found that teens who received comprehensive sex education were 50 percent less likely to experience pregnancy than those who received abstinence-only education.6
Researcher Douglas Kirby for the National Campaign to End Teen and Unplanned Pregnancy examined studies of prevention programs which had a strong experimental design and used appropriate analysis. Two-thirds of the 48 comprehensive sex ed programs studied had positive effects.
40 percent delayed sexual initiation, reduced the number of sexual partners, or increased condom or contraceptive use.
30 percent reduced the frequency of sex, including a return to abstinence.
60 percent reduced unprotected sex.