We never told DS his score until pretty much now when he is in high school (he tested when he was in 1st grade). Kids know when the pace of learning at school is not working for them. We just told him when he took the test that some psychologists were interested in finding out how he learns and maybe can figure out a better way for his teacher and school to help him learn as much as he can at school.

DD10 never even tested, but she knew all along that she learns much, much faster than other kids at school and outside of school. We never mentioned the G word to her, just told her that people are talented in different ways, and we will help her develop her talent well.