Comprehensive sex ed vs. abstinence-only

The Adolescent Family Life Act of 1981 provided the first federal funding stream for abstinence-promotion programs. The 1996 welfare reform legislation added Title V Section 510, providing $50 million per year specifically for abstinence-only education with strict eight-point definitional requirements (teaching that abstinence outside marriage is the expected standard, that sex outside marriage is likely to have harmful consequences, etc.). Community-Based Abstinence Education added another $100+ million annually from 2001 to 2008. Cumulative federal investment exceeded $2 billion. The funding was politically protected even as evidence accumulated that the programs were not producing the outcomes claimed.

In 2007, Mathematica Policy Research published the congressionally mandated evaluation of four Title V abstinence-only programs. The study followed roughly 2,000 students over four to six years using random assignment. Students in the abstinence-only programs were no more likely to abstain than control students, initiated sex at the same age, had the same number of partners, and had similar rates of unprotected sex. The study was the most rigorous evaluation of the funding stream ever conducted. The response from program defenders was to argue that the specific programs studied were not representative, while not producing alternative evaluations that showed positive effects. The pattern—reject the unfavorable evaluation, fail to produce favorable ones—is characteristic of programs that survive on symbolic rather than empirical grounds.

Virginity pledge programs, of which True Love Waits is the most prominent, ask adolescents to commit publicly to abstinence until marriage. Hannah Brückner and Peter Bearman's analysis of the National Longitudinal Study of Adolescent Health found that pledgers delayed first intercourse by about eighteen months on average compared with similar non-pledgers. The delay was real. The follow-up finding was more important: pledgers who broke the pledge were less likely to use contraception at first intercourse, were less likely to seek STI testing, and had STI rates statistically indistinguishable from non-pledgers by their mid-twenties. The delay produced no protective effect downstream because it came at the cost of preparation.

Henry Waxman's 2004 congressional report documented that eleven of the thirteen most widely used abstinence-only curricula contained false or distorted information about contraceptive effectiveness, transmission of HIV, and the consequences of abortion. The report was politically charged but the underlying review was straightforward: curricula stated condom failure rates of thirty percent or higher (the actual typical-use failure rate is around fifteen percent for pregnancy, lower for HIV), claimed that touching genitals could transmit pregnancy, and treated mental health consequences of abortion as established when the research showed otherwise. Curricula that contained these errors continued to receive federal funding.

Adolescent pregnancy rates in the Netherlands are roughly one-fifth the U.S. rate. Dutch sex education is comprehensive, begins in upper elementary school, and is universally delivered. The comparison is repeatedly invoked in U.S. debates and repeatedly ignored as a basis for policy because the cultural context differs in ways defenders of abstinence-only emphasize. The cultural difference is real. It is also true that the curricular component is replicable across cultures and has been shown to produce effects in U.S. studies. The comparison is suggestive rather than dispositive, and the U.S. policy debate continues to refuse the suggestion.

John Santelli's series of papers, including the 2006 and 2017 reviews in the Journal of Adolescent Health, consolidated the empirical case against abstinence-only funding. The 2017 update incorporated newer studies including evaluations of refined abstinence-only programs branded as "sexual risk avoidance." The newer programs performed no better than the originals. Santelli's framing was deliberately conservative: he documented what the studies showed, characterized the effects (or non-effects) precisely, and let the policy implications follow. The work has been influential among professionals and largely ignored at the level of state-level political decisions.

Around 2010, abstinence-only programs began rebranding as "sexual risk avoidance education" (SRAE), a framing borrowed from public health language to make the programs sound more clinical. The content was largely unchanged. The Title V SRAE program continues to fund these curricula. The rebranding is interesting because it acknowledges that the older framing had become a political liability while preserving the substance. The collective gets a name change. The students get the same content.

Comprehensive sex education is not a single curriculum but a family of programs sharing common elements. The strongest evaluation evidence supports specific programs: Reducing the Risk, Safer Choices, Be Proud Be Responsible, Making Proud Choices. These programs produce effects on initiation timing (modest), contraceptive use (clearer), pregnancy and STI rates (modest to clear depending on outcome). The effects are real, smaller than enthusiasts claim, larger than critics claim. The pattern is consistent with the rest of the field: curriculum-based interventions move outcomes detectably but do not transform them.

Comprehensive curricula increasingly include LGBT-inclusive content, partly because LGBT students are present in every classroom and partly because excluding them violates the curriculum's logic of accurate information. Several states have responded with laws prohibiting positive discussion of LGBT identities in schools. The fight has shifted the battleground: abstinence-only programs are politically weaker than they were, but laws restricting discussion of sexual orientation and gender identity have replaced them as the primary mechanism for limiting curricular content. The substantive effect on students—reduced access to relevant information—is similar.

States with comprehensive sex education typically allow parental opt-out. States with abstinence-only typically do not allow opt-in to comprehensive content. The asymmetry is consequential. Parents who want comprehensive content for their children in an abstinence-only district have few options. Parents who object to comprehensive content in a comprehensive district can opt out easily. The political stability of the asymmetry reflects which side has more power in which districts, not any neutral principle.

Surveys of high school students consistently show majority preferences for more information on relationships, consent, and contraception, not less. The preferences cross political and religious lines. The students who feel most underprepared are not necessarily the ones whose parents object most loudly to comprehensive content. The collective's curricular policy has consistently weighted parental preferences over student preferences, which is defensible for younger children and increasingly questionable for older adolescents who will be making the relevant decisions on their own within years. Law 0 humility might suggest asking the students.

The empirical question—which curriculum produces better measurable outcomes—is settled. The persistent fight is about something else: what the collective tells adolescents about what sex is for. Abstinence-only's underlying claim is that sex is for marriage. Comprehensive sex education's underlying claim is that sex is for whatever the people having it want it to be for, subject to consent and protection. These are different moral claims, and they do not resolve into each other through evidence. The honest framing of the policy debate would acknowledge that what is being argued about is not what works but what should be taught about love. The evidence settles the first question. The second is the harder one, and pretending it is the same as the first has produced two decades of unproductive argument.

1. Trenholm, Christopher, Barbara Devaney, Ken Fortson, Lisa Quay, Justin Wheeler, and Melissa Clark. Impacts of Four Title V, Section 510 Abstinence Education Programs: Final Report. Princeton: Mathematica Policy Research, 2007.

2. Santelli, John S., Mary A. Ott, Maureen Lyon, Jennifer Rogers, Daniel Summers, and Rebecca Schleifer. "Abstinence and Abstinence-Only Education: A Review of U.S. Policies and Programs." Journal of Adolescent Health 38, no. 1 (2006): 72–81.

3. Santelli, John S., Leslie M. Kantor, Stephanie A. Grilo, Ilene S. Speizer, Laura D. Lindberg, Jennifer Heitel, Amy T. Schalet, et al. "Abstinence-Only-Until-Marriage: An Updated Review of U.S. Policies and Programs and Their Impact." Journal of Adolescent Health 61, no. 3 (2017): 273–80.

4. Brückner, Hannah, and Peter Bearman. "After the Promise: The STD Consequences of Adolescent Virginity Pledges." Journal of Adolescent Health 36, no. 4 (2005): 271–78.

5. Kirby, Douglas. Emerging Answers 2007: Research Findings on Programs to Reduce Teen Pregnancy and Sexually Transmitted Diseases. Washington, DC: National Campaign to Prevent Teen and Unplanned Pregnancy, 2007.

6. Goldfarb, Eva S., and Lisa D. Lieberman. "Three Decades of Research: The Case for Comprehensive Sex Education." Journal of Adolescent Health 68, no. 1 (2021): 13–27.

7. Boonstra, Heather D. "Advocates Call for a New Approach After the Era of 'Abstinence-Only' Sex Education." Guttmacher Policy Review 12, no. 1 (2009): 6–11.

8. U.S. House of Representatives, Committee on Government Reform, Minority Staff Special Investigations Division. The Content of Federally Funded Abstinence-Only Education Programs (Waxman Report). Washington, DC: 2004.

9. Bearman, Peter S., and Hannah Brückner. "Promising the Future: Virginity Pledges and First Intercourse." American Journal of Sociology 106, no. 4 (2001): 859–912.

10. Lieberman, Lisa D., Haiyan Su, and Eva S. Goldfarb. "Comprehensive Sex Education in U.S. Schools: A Review of Current Evidence." American Journal of Public Health 109, no. 6 (2019): 856–62.

11. Kirby, Douglas, B. A. Laris, and Lori A. Rolleri. "Sex and HIV Education Programs: Their Impact on Sexual Behaviors of Young People Throughout the World." Journal of Adolescent Health 40, no. 3 (2007): 206–17.

12. Silverman, Jay G., Anita Raj, Lorelei A. Mucci, and Jeanne E. Hathaway. "Dating Violence Against Adolescent Girls and Associated Substance Use, Unhealthy Weight Control, Sexual Risk Behavior, Pregnancy, and Suicidality." JAMA 286, no. 5 (2001): 572–79.