Perhaps (and if staff (or enterprising student) are willing) if there were a “reteaching” session a couple days before the Q/A session, where it was made clear the content covered would be introductory or key points. I personally was not embarrassed at not knowing the material and I’m sure others were in the same boat… I would have gladly sat in a room full of other “stupid” students because we would all know we’re there for the same thing. The “smart” kids should know to save their “real” questions for the Q/A session and not attend the reteaching session. Also, perhaps the reteaching session would help the slower kids catch up and understand the material enough to develop questions for the Q/A session a couple days later.