The US pubskewl system today would rather do almost anything besides reading, writing, and arithmetic. Gay activism has to take its place in the queue, though it gets a few choice days each year.
In the 1960’s I was in the NY school system. They took time 40 years ago to teach gay rights then. They just did it quietly and without the special curricula they have today. So don’t fool yourself into thinking it’s just a part of health class. I assure you it goes on in teachable moments throughout the day.