<p>There is actually little evidence here that School A is any better than School B - the proportion of kids who go to Ivies is more a function of the students who attend (and their families) rather than anything the school does for the kids - although there is something to be said about a school who gets no kids in vs. a school who gets a certain number in every year.</p>
<p>The fact that 10% of the class at School B gets into the same elite schools as School A means that they both provide the necessary coursework, ECs, and counseling necessary to make it, if you start out with the raw material. There is not much a school can actually do if you don’t come with the right set of tools. It’s just that School A manages to recruit more kids with the right set of tools. What they want you to believe is that ANY child who enrolls has a 25% chance of making an Ivy, and that’s just not true.</p>