Actually gym classes are a dumb leftover from the turn of the century (no not that turn, the 1900 turn). It serves no purpose anymore. Modern students get no meaningful skills, no lasting health benefits. It's mandatory exertion for a grade.
Learning to drive a car at school would do a whole lot more good!
What's wrong with making sure every kid gets to move a bit (exert, as you put it)? It doesn't matter for kids that are already fit, but I think that it's great for health of the bottom 30% who doesn't exercise and doesn't have a proper diet (both are their parents fault, to be clear).
Learning to drive a car at school would do a whole lot more good!