[abakker]

The real question is whether they get results that are as much better as they should be, since they are selecting students up front. I suspect that picking your inputs at a very young age is more about marketing and capturing money than it is about true ability to perform.

Either that, or it is simply a follow on of the fact that parents with money, free time, and high levels of education tend to have students that do well in school. The school may make no difference at all if the kids learn a lot at home.