<p>
What does one have to do with the other? (But for the record, I believe that universities have targets for international students, not quotas. Just like they have targets for many other variables of their student body.) </p>
<p>
They are known; quite publicly not too long ago. Peterson’s used to publish the number of international applicants/admits/enrollees separately until 2009 or so. Unfortunately, they’ve now removed these data from their website. I believe that the Institute of International Education might still be keeping track of international admission data, but they are very picky who they release institution-level statistics to.</p>
<p>I did compute the overall and domestic-only admission rates for several colleges and universities, when those numbers were still available. If I remember correctly, the difference was barely noticeable (± 1%) at most universities because the # of international applicants was only a small fraction of the total # of applicants, even at universities that should attract a boatload of international applicants (like MIT). The only significant difference I found was at small liberal arts colleges with financial aid for international students: for example, in fall 2008, Mount Holyoke had a total admission rate of 53% but 64% for domestic students only.</p>