<p>At this point, it’s very hard to generate any kind of list of which schools allow what, and most of the cut and dried statements (like saying you can’t do EA and ED) are not always true and should not be taken as the final answer. There are lots of situations which a GC can perfectly legitimately sign off on (for instance, Columbia allows you to apply there ED and then apply elsewhere EA).</p>
<p>It really comes down to the particualr circumstances. The only really accurate way to approach this is to figure out which schools you are interested in, then check their particular policies.</p>