There's a huge difference between a perfect SAT and an 890. That is a sad score.
I've never seen a school in which taking attendance, recess and lunch take up six hours of the day. They take up like an hour combined and kids eat lunch at home too.
As for moving from one activity, most elementary schools I know of don't move the kids much.
I am NOT generalizing. I have not, in any post, said 'everyone does X.' I have repeately made clear that I'm talking about what I know - which is no different in scope, I'd guess, to what anyone else knows. We all know other people, have family in other towns, etc.
As you yourself said, I said companies in my area. I originally asked because I happen to know some serious ballet people and have never heard of anyone dropping out to homeschool because of ballet. I went and looked at the company school in order to see if I was mistaken. I was not. Coconut said their area was the same. There is more than one company here, I'm not talking about Miss Julie's Little Dance Academy or whatever.
Yes, music lessons are an hour. Fencing or whatever is like an hour, or spend an hour hanging out with friends, and that's nearly the same time as the company school on schooldays, it's 2-2.5 hours a day.
I don't know people involved in gymnastics past the like, 6-year-old level, so I have no idea how it works here or elsewhere. I do know people involved in ballet, and have most of my life, and here, it's not like it is wherever that poster lives. That doesn't mean I think everyplace is like here. As you referred to me saying in my area, I thought that was clear.