I would feel betrayed by public school sex ed if I went to public school. I went to Catholic school. We had a half-assed explanation of cishet breeding anatomy in 7th grade. For some reason, high school health class was rolled into high school gym class, which you didn't have to take if (like me) you were in band class instead, so I received no formal sex ed in high school. That's arguably a good thing because, again, Catholic school.
I do remember there being some mandatory assembly in elementary school where they had some Christian abstinence-only young adult presenters going off about how oxytocin is supposedly like tape; it's strong if you bond it to something once and gets weaker the more you remove it to attach it to something else.
The guy presenter likened finding a mate to picking fruit and asked the AMABs in the audience if they'd rather have the icky, easy to fetch apples from the ground or the pristine apples in the upper branches. I recall thinking I would cut down the tree so I can have all the apples.