When I was a kid in the 70's in rural California, we were bussed almost an hour to a bigger school for mandatory swimming lessons. I don't remember at what age but it was elementary school, I think maybe 5th-6th grade. Several grades were grouped together.
Most (all?) of us could already "swim" basically, since there were lakes and rivers near the small towns and kids usually got free swimming lessons around age 5. The bigger lessons were about the various (then) standard strokes, pool safety and basic lifesaving, how not to accidentally kill yourself on a diving board, swimming laps instead of just swimming around, etc.
I absolutely hated it (too many strangers, why didn't we have our own pool, my endurance was crappy, I was afraid of the deep) -- but I'm glad they made us do it instead of letting us wimp out.
I think it's something schools should do but the logistics of doing it is difficult. You don't want to do it for a whole gym class and you want more instructors available than schools have staff to provide so they have to work with some other group to get enough people to work individually with the kids.
Most (all?) of us could already "swim" basically, since there were lakes and rivers near the small towns and kids usually got free swimming lessons around age 5. The bigger lessons were about the various (then) standard strokes, pool safety and basic lifesaving, how not to accidentally kill yourself on a diving board, swimming laps instead of just swimming around, etc.
I absolutely hated it (too many strangers, why didn't we have our own pool, my endurance was crappy, I was afraid of the deep) -- but I'm glad they made us do it instead of letting us wimp out.