I was one of those HTBs & I can still remember those days. The girls were the center of attention of the boys, & most of the fights & classroom disruptions were over a girl. The teacher is conjugating a verb while the goddess sitting next to me is, well, a goddess. What do you think I learned that day?
The solution is sex segregated schooling after the 5th or 6th grade thru graduation from high school. And that includes teachers, too, though I might allow the exceptions of those really old, mean women teachers to teach boys.
If you take the sex out of the schools, more learning & less disruption will result. Perhaps fewer girls will get pregnant. I know the boys will get a better education, & likely so will the girls.
After school & weekends is plenty of time for socializing.
School is about EDUCATION, not sex!
It doesn’t always work though. I have heard that one of the all-girl Catholic high schools here in Houston has a fairly high number of pregnanies and, like pregnancies in a lot of affluent schools, many end in abortion.