Comprehensive sex education covers abstinence. Yes you cover safe sex and iud contraception. Yes, religion has ruined what the perception of abstinence, but that doesn’t change the fact that abstaining is the safest way to prevent pregnancy, stds, and emotional harm. I actually taught sex Ed for 5 years. Ideally teens should only engage in none fluid exchanging sexual activities until early adulthood. I would always joke with my students that “I’m not here to tell you, ‘don’t have sex or else you’ll get pregnant, die, and/or go to hell’ If you are going to have sex please explore other options first, than use contraception if you must. But abstaining is the safest option.”

I also only had religious based sex education where the told the girls in my class sex was like a piece of tape. The more you use it the weaker the bonds you have with partners and God. Soooooo Ya needless to say my graduating class all were pretty much fucking every other day. Absurdity in learning never leads to good outcomes, but honesty will always win out. Abstinence should always be the preference but not the only option, with full on no contraception sex should only been done once you are fully developed and mentally able to take on any consequences of your actions.