Reliable Source 

I'm a high school teacher. My students always ask me if they can use Wikipedia. They seem stunned when I say they can, and they often reply with an astonished "But is not reliable - anyone can edit it!" I simply laugh them off and and share the countless studies that have shown Wikipedia to be in the high 90% reliable range.

I am curious though...what would you have teachers like myself say to students conducting research on Wikipedia concerning its reliability?