I mean, just my personal opinion, but abstinence does need to be taught as a co-curriculum with a large portion of relationship education (particularly what a good relationship is/has, and what a bad relationship looks like and how to leave it), and stoicism and some other philosophies that demonstrate how forgoing pleasure (for some things, for periods of time) can lead to better outcomes. I don’t want my kid thinking they need to refrain from sex because it’s somehow immoral, but I also don’t want them to jump into every ‘relationship’ that comes their way in school and start having sex with someone who is just using them for their genitals.