I am a believer in telling kids their IQ scores. I don't feel that I have a right to hold that information and not pass it on. Having said that, I haven't told dd, but she's only 5. She knows she is gifted though. But not in a 'wow, you're so special because you're gifted' kind of way, but in a if you find yourself feeling misunderstood this could be the issue, here are the great things about it, here are some things you might find a challenge kind of way. She was visibly relieved to have that information, even at 5.
I do also agree with this. Having the knowledge that I was gifted and the ramifications of that would have been a huge relief in elementary school. I really always thought something was wrong with me because I didn't fit. I do talk to my kids about it in this way.