<p>It’s not common for students to take classes anywhere off campus if they’re offered at Swarthmore (unless there’s a scheduling problem, or something like that), just because it’s a hassle to get off campus. But a manageable hassle–worth it if you really want something that’s offered at Penn. I’m taking a course at Penn this semester (in a language Swarthmore doesn’t offer) and I don’t find the travel time prohibitive–it really doesn’t take all that much longer than the Tri-Co van. The biggest obstacle is scheduling, because the timing of the course can preclude you from taking other things at Swarthmore. It’s definitely doable to take courses at Penn, but don’t expect to take them just for the heck of it–you need to do most of your academic work at Swarthmore. </p>
<p>Check the link that interesteddad put up, and see if they’ll accept the credit (and if so, absolutely take the exam).</p>