Separate and apart from the above post - G/T programs are rarely tuned to the highest levels of gifted. They're mostly aimed at kids just smart enough to get in and move at a pace that's too slow for your real far end of the bell curve kids.
At the same time, kids who just miss the cut-off of the program by a point or two are still relegated to a curriculum that fails to satiate them. Is a kid with an IQ of 128 really so different from a kid with an IQ of 130 that they deserve significantly different curriculums?
And given that a kid of 130 is pretty distinct from a kid of 150 can they really both be served by the same gifted curriculum?
I think the answer to both questions is "no" and so a better solution is needed for everyone.
Well said.