Thanks GeoMamma, your points are what I am worried about. I don't want him to think he shouldn't answer questions or that he should hide that he is smart. I have not and would not share with him the story of my hiding my tests.
Our church has a children's service where they are given a chance to answer questions and we have started to tell him to let the younger children get the easy ones, which he seems to understand and does nicely.
The class knows he knows more than they do - last year his first grade teacher told us the kids all liked to let him answer, but in a good way. What a difference a year makes!
I also like Breakaway's idea of mentioning he might hear something interesting if he gives others a chance to answer.
