<p>I was wondering if a current student/alumni/someone who's done this before could tell if whether or not I should be expecting some sort of a letter from Caltech? Also, how rare/common is it for an offer of admission to be revoked?</p>
<p>I can’t remember if I received a letter. I think I did, but that may have only been for accepted students. I do know I received my admission decision online.</p>
<p>I know someone who received an F in a community college class their last semester of senior year, and their admission was not revoked. I think you would have to fail a majority of your classes for it to be revoked, but in the past they have sent a stern letter if you start making Cs or worse asking if you should reconsider whether you’re ready for Caltech. Nothing binding though.</p>