I inquired on behalf of a kid I tested who had a 144 (because yes, there's such a thing as a confidence interval), and DITD said, "If you think he should qualify, make the case in the report. We know you and we value your judgment." But that kid was solid across the board, and had fabulous achievement scores as well.
My guess is that they really don't want to take kids who are almost there, because then the almost becomes the new there, and then they have to take kids who are almost almost there, and so on.
(And by the way, I would never test a kid for 6 hours straight if I could possibly avoid it. I generally do 2-2.5 hours, send him off for a relaxed lunch, then another 2-2.5 hours in the afternoon. Younger kids just the morning session. I don't want to test the kid's testing stamina. I'd rather test the constructs the tests were designed to measure. Sigh.)
