But are there some schools that have more emphasis on sports than the others? Like where everyone is expected to participate in extracurricular sports activities?
One main reason Indies offer a variety of sports is for the children to find something to enjoy and develop in when normally the opportunity would never arise.
My DS is not sporty BUT since joining his Indie school, he now enjoys a bit of water polo. He swims and he is tall. That proved to be an interesting combination for him. He's no medal winner or anything but it was a nice addition to his weekly work. Something he never would have undertaken outside of the school.
So, don't be discouraged by the plethora of sports your non-sporty child may get to try at an Indie school.