Oh Rose - this is such tough stuff. A friend of mine was told that one of her set of identical twins made the gifted program and one didn't because she scored one point lower on the test that the school used. My friend called up the school and made a fuss and said "you may not put one of my twins in and leave the other out - take 'em both or leave 'em both!"
Thankfully the school decided to take them both.
Of course with identical twins there is a much stronger case than fraternal twins, but have you tried to set up a meeting with the principle and his teacher, stressing the social/emotional needs and his teacher's assesment that he is very capable of doing the work in the gifted class, and the Stanford 10?
I think the next step is to try the 'human' angle and act like 'well, sometimes the tests don't catch every gifted kid.'
If you have work samples that show he is doing 'way above grade level' work for fun at home, those might be very impressive too...
Some kids can get strong grades, especially in elementary school, and not have educational needs that aren't being met in the regular program. It seems to me that your goal is to figure out if your son does have special educational needs (and testing isn't the be-all, end-all for this) and then demonstrate those needs to the decision makers.
Best Wishes,
Grinity
