<p>EDII is indeed binding. They can’t force you to enroll, and I’m pretty sure they won’t make you pay a year’s worth of tuition like ImmanuelKant said, but as he said, the only way you can get out of it is if your FA package makes it possible to attend. But if FA is that large a concern/you aren’t really sure about Swarthmore, ED is likely not the right decision.</p>