<p>cc411,
It is on the site all letters of admission and regret letters should be out by April 1. According to the “Meet SC” booklet May 1 is National Candidates’ Reply Date. This is the date by which all admitted freshmen who plan to attend USC must submit their deposit.</p>
<pre><code>From what I have read on other forums this appears to be a reply date used by most of the U.S. universities.
</code></pre>