Hello_lauren,
I'm a first year student at penn and would highly recommend the program. The faculty are diverse, supportive and really sharp. If you're looking to get a lot of feedback about your work, focus in your studio while taking some great classes, this is the place. And then you have the rest of the university thats open to you to take classes, which is awesome. It's an interdisciplinary program so the opportunity to get training in different media is more than available. With that said, if you're dedicated to one medium that is also seems to fine. My classmates are great and exploring many different ideas. Do you have specific questions or do you know what you're looking for?
Also they just made this, it explains a lot - http://www.design.upenn.edu/files/PennDesign_MFA_Catalog.pdf