rabitstew
First school I went to was a private school where punishment was still allowed (not in the UK). Cane, etc. still in existence. You got a few slaps on your hands for not having a clean handkerchief / socks in the morning!!! We had trouble-makers, too, but they were pretty subdued, given what the outcome would have been.
I'm confident children can learn the recorder / flute / violin - not as expensive as a piano.
Also, not everyone has to go to the wraparound care. If parents want to use it, then their DCs better be well-behaved. Otherwise, they should just be able to "reject" them...