We have homeschooling in CZ. Not many people use this option, but those who do usually do so because they see schools as inefficient. When I was a kid, at least a third, sometimes more than a half of every lesson was spent on various logistics, individual examination of pupils by the board, or simply disciplining the class. This is a very wasteful use of time, our most restricted life asset. In individual training, you can teach all the necessary stuff in three hours and then, for example, go for a hike.

In my experience homeschooled children are the most fit ones. They move around a lot, not being forced to sit (the worst position for a human body) for endless hours.