Want to prevent sexual violence? Teach kids everything they need to know about sex.

You may think of sex education like it appears in pop culture: A classroom of teens looking nervously at a banana and a condom.

Amid the giggling and awkward questions, maybe the students get some insight into how sex works or how to prevent pregnancy and sexually transmitted infections.

While that's valuable knowledge, comprehensive and LGBTQ-inclusive sex ed actually has the power to positively influence the way young people see themselves and their sexuality. It may also help prevent sexual violence when it teaches students how to value their own bodily autonomy, ask for consent, and identify unhealthy relationship behavior.

That possibility couldn't be more important at a time when the public is searching for answers about how to stop sexual violence.

It's a familiar cycle; one person's predatory behavior becomes national news (think Harvey Weinstein, Roger Ailes, Donald Trump, and Bill Cosby), the outrage reaches a peak before fading from the headlines, and we end up back in similar territory months or years later.

Nicole Cushman, executive director of the comprehensive sex ed nonprofit organization Answer, says that teaching young people about sex and sexuality can fundamentally shift their views on critical issues like consent, abuse, and assault.

When parents and educators wait to have these conversations until children are young adults or off at college, Cushman says, "we are really doing too little, too late."

Comprehensive sex ed, in contrast, focuses on addressing the physical, mental, emotional, and social dimensions of sexuality starting in kindergarten and lasting through the end of high school. There's no single lesson plan, since educators and nonprofits can develop curricula that meet varying state standards, but the idea is to cover everything including anatomy, healthy relationships, pregnancy and birth, contraceptives, sexual orientation, and media literacy.

"Comprehensive sex ed builds a foundation for these conversations in age-appropriate ways," Cushman says. "That [allows] us not to just equip young people with knowledge and definitions, but the ability to recognize sexual harassment and assault ... and actually create culture change around this issue."

Some parents balk at the idea of starting young, but researchers believe that teaching elementary school students basic anatomical vocabulary as well as the concept of consent may help prevent sexual abuse, or help kids report it when they experience it.

If a child, for example, doesn't know what to call her vagina, she may not know how to describe molestation. And if a boy doesn't understand that he can only touch others with their permission, and be touched by others upon giving his consent, he may mistake sexual abuse as normal.

It doesn't take much to imagine how that early education could impart life-long lessons about the boundaries that separate respectful physical contact from abuse and assault.

Some adults, however, think children learn these lessons without their explicit help. While they do internalize signals and cues from the behavior they witness, that's not always a good thing, says Debra Hauser, president of the nonprofit reproductive and sexual health organization Advocates for Youth.

If a child grew up in a household witnessing an emotionally, verbally, or physically abusive relationship, they may not feel they have a right to give or revoke their consent. They may also believe it's their right to violate someone else. Moreover, young people rarely, if ever, get to watch as the adults around them navigate complicated conversations about things like birth control and sexual preferences.

That's where comprehensive sex ed can be essential, Hauser explains.

"You want young people to learn knowledge, but you also want them to learn skills," she says. "There's a particular art to communicating about boundaries, contraceptive use, likes and dislikes. It's not something you get to see that often because they’re private conversations."

So while parents — and some students — grimace at the idea of role-playing such exchanges in the classroom, that technique is a cornerstone of comprehensive sex education. Staging practical interactions that are inclusive of LGBTQ students can help reduce the stigma that keeps people from expressing their desires, whether that's to stop or start a sexual encounter, use protection, or confront abusive behavior.

But learning and practicing consent isn't a silver bullet for prevention, Cushman says: "Plenty of young people could spout off the definition of consent, but until we really shift our ideas about gender, power, and sexuality, we’re not going to see lasting change."

Research does suggest that a curriculum that draws attention to gender or power in relationships, fosters critical thinking about gender norms, helps students value themselves, and drives personal reflection is much more likely to be effective at preventing pregnancy and sexually transmitted infections.

There's also research that indicates that clinging to harmful gender norms is associated with being less likely to use contraceptives and condoms. And women and girls who feel they have less power in a sexual relationship may experience higher rates of sexually transmitted infections and HIV.

While researchers don't yet know whether comprehensive sex ed can reduce sexual violence, Hauser believes it's an important part of prevention.

"Comprehensive sex ed is absolutely essential if we're ever going to be successful in combatting this culture," she says.

But not all students have access to such a curriculum in their schools. While California, for example, requires schools to provide medically accurate and LGBTQ-inclusive sex ed, more than two dozen states don't mandate sex ed at all. Some don't even require medically accurate curricula.

The Trump administration is no fan of comprehensive sex ed, either. It recently axed federal funding for pregnancy prevention programs and appointed an abstinence-only advocate to an important position at the Department of Health and Human Services.

Research shows that abstinence-only education is ineffective. It can also perpetuate traditional gender roles, which often reinforce the idea that girls and women bear the responsibility of preventing sexual assault.

Cushman understands that parents who don't want their children learning about comprehensive sex ed are just worried for their kids, but she says the knowledge they gain isn't "dangerous."

Even if some parents can't shake the worry that it might be, the firestorm over Harvey Weinstein's behavior and the outcry from his victims are proof that we need to better educate young people about sex, consent, and healthy relationships.

It's simply unconscionable to teach girls and women, by design or accident, that sexual violence is their fault.

"We have an obligation to make sure [youth] have the knowledge and skills they need to make the decisions that are best for them," Cushman says. "Sex ed really does have the power to shift our perceptions."