I remember in elementary school when a kid brought a Playboy

magazine to school. I bet that 99% of the kids in the school had no idea it had happened.
Nevertheless, the Principal of the school was horrified. So, she and the gym coach came up with a plan. They looked through the list of movies that the school board had available to check out and show students. In the very early 1980s (read that like somewhere around 1971), hygiene of the body was still thought of as the equivalent of hygiene of the mind. Which made some sense because the movie was most likely made in 1954.
If they had just taken the magazine away and tossed it, I wouldn't know even today why they showed us that movie.
The movie showed how to take a shower, how to dry off properly with a towel (turns out I was doing it all wrong), how to comb your hair, brush your teeth, and the importance of using deodorant.
Of course, it was only the boys that were shown the movie. After the movie was done, we all started asking each other what it was all about and why was such a strange movie shown to us, and why only to the boys. It only took a few hours for the answer to come back about the Playboy magazine. Oddly, I still didn't understand what a magazine showing naked women had to do with showering correctly and brushing my teeth.
Now, fast forward to high school. In the 10th grade, there was a health class and they seriously left nothing out. We learned it all. What intercourse was, how babies were made, which contraceptives were most effective, what every STD's symptoms were and what it would do if left untreated. The class was also mixed gender. I remember one class where the teacher started out by saying, "before the end of the class everyone will have taken their tongue and rubbed in on the inside of their cheek." Later in the class, he explained that the inside of a Vee-Jay Jay was almost the same smoothness as the inside of the cheek in the mouth. Just like he predicted everyone felt the inside of their cheek with their tongue.
I think I would have liked that class better if there were live demonstrations about masturbation instead of cartoon characters. But, can't have everything.