<p>if you know the professor’s field, you can go to the penn registrar’s site and look at the course listings under that field to see if his/her name is listed by an undergrad course (000 to 400 level, usually) or grad / MBA course (500+).</p>
<p>for example, if professor x (ooh x-men) is a health care systems professor, you would go to the hcmg section of the registrar’s site, which is here:</p>
<p><a href=“Office of the University Registrar”>Office of the University Registrar;
<p>and see if professor x is listed by any course, cross-referencing with the spring 2007 listing link at the top of each section (just to be sure).</p>
<p>for the question it doesn’t matter as much, since research can be done with any professor that’s willing, regardless of their instructional level.</p>