Third grade would have been too late for both of my kids. But I definitely have seen some kids who were difficult to pinpoint as gifted in k/1 but look gifted to me now. On the flip side, I know some kids who tested gifted in K who do NOT appear gifted to me at the present time. I think this is really a hard question.

One of my "things" with giftedness, though, is that I would like to see all students screened.