<p>When do colleges start accepting kids off the waitlist and how long does it last?</p>
<p>Hmm. I'm not into that process yet, but I hear that there's a low probability of kids being accepted off waitlists. =/</p>
<p>May 1st, they have to wait until all the regular decision accepted students decide to enroll or not, and then from however many spots the university has left, they start to admit students from the waitlist.</p>