I asked them 2 questions:
1. What do they feel is their schools greatest strength? (All said the faculty but KCOM was the only one to back up why)
2. Why did they decide to come to this school to teach?
Other questions I asked were:
Have their expectations about the school been met since they've been there
What is their schools greatest weekness?
Try to use this oppurtunity to allow them to not only sell the school to you but also gain valuable insight to the program from the faculties point of view.