I have an etiquette question about withdrawing applications. I received an offer of admission from my first-choice school and would like to accept it. I've withdrawn from my other interviews, in hopes that they'll invite someone off the waitlist, but there are a couple of schools from which I've heard nothing - which I assume means that I'll be rejected. I feel strange withdrawing from schools that I expect to reject me - like, ha, I'm withdrawing before you can reject me! - but I also don't feel comfortable accepting an offer without closing the door on every other possibility. Thoughts on withdrawing from schools that didn't offer an interview so that I can accept an offer of admission?