Coaches will typically ask a wrestler stuff like:

What is your planned major?

What weight do you see yourself at?

They of course ask about the grades....

They ask about state and how you did, I know they asked a buddy of mine about a tough loss he had, and that's where they really want to see character shine through.

I agree with Slowpoke too on watching the team and coach. I know quite a few colleges will let you come and watch practices and competitions.