One other thought on that same line...

How about a compromise where IQ is actually part of the picture but, once you've reached a certain point where the tests no longer distinguish as well, what diferentiates HG from EG from PG is not the #s alone but the characteristics that go with the individual child?

I've actually been told by someone in one of our local school districts that a child with an IQ of 100 could be gifted b/c IQ isn't what determines if someone is gifted. I can't get behind that idea but I could see as how two kids with the same IQ # might not be at the same level of giftedness.