Over time, you will get a better idea of whether your daughter would do better in a large school or a small one. Large schools do have a lot more going on, but sometimes there are more resources, opportunities, and teacher attention available to the individual student at a smaller school. For dance, as a first step, make sure it is available to all students as an after-school activity all year (as a substitute for a sport). I assume most schools allow that, but that might be an easy way to weed out a few. As a fellow mid-Atlantic parent, I suggest you visit Andover and SPS and decide whether you can stand that drive several times a year (and probably not going to dance concerts because of it).