<p>I believe that, in theory, Penn students can take academic classes at Curtis if they are not offered at Penn. But there aren’t many academic classes at Curtis that are not offered at Penn, and few of those are likely to appeal to Penn students (or to be acceptable for major or distributional credit). The same deal applies to Curtis students, but of course there are many hundreds of courses at Penn that are not offered at Curtis. That said, I suspect that only a few of the Curtis students ever take classes at Penn. They are pretty busy kids.</p>
<p>Instrument instruction at Curtis is not open to Penn students. I don’t think there is anything like the Juilliard-Columbia joint degree program.</p>
<p>Curtis students do stuff like perform the works of Penn composition grad students, though. And they’re around generally (the ones who aren’t already international stars). A friend who graduated from Penn seven years ago, who was a fairly serious musician, often hung around Curtis and made several friends, one of whom became an apartment-mate.</p>