I went to high school during peace time — that used to be a thing way back when — and I think my school required it for ROTC but maybe it was more of a strong suggestion rather than a requirement.
We also had possibly the worst possible system for military recruiters. You had to choose between the regular P.E. class, weight lifting (if you played a sport), and ROTC. The end result was that ROTC was always like 2% committed future service members (who would have joined the military with or without high school ROTC) and 98% awkward people avoiding sports at all cost. (Or the worst fate of all, 1st hour PE so you were the person who smelled like stanky teen gym clothes in every one of your classes.)
I went to high school during peace time — that used to be a thing way back when — and I think my school required it for ROTC but maybe it was more of a strong suggestion rather than a requirement.
We also had possibly the worst possible system for military recruiters. You had to choose between the regular P.E. class, weight lifting (if you played a sport), and ROTC. The end result was that ROTC was always like 2% committed future service members (who would have joined the military with or without high school ROTC) and 98% awkward people avoiding sports at all cost. (Or the worst fate of all, 1st hour PE so you were the person who smelled like stanky teen gym clothes in every one of your classes.)