<p>to further explain waitlisting, WashU waitlists many qualified candidates because they would probably get into HYPSM and go there and not go to WashU, so they waitlist them, and if the candidates stay on the waitlist and if there is room left in the class, they start taking those students off the waitlist. its all about yield, colleges care very much about yield and VERY much about ranking – not because they agree with the rankings, but because they know that many americans care about rankings, which in turn affects their school.</p>