This is all great stuff. I especially like the "Can you help me understand..."

I'm still figuring all this out, but it seems that in my district the gifted coordinator has to approve the grade skip before the school will get involved. He provides a recommendation to the school and they decide from there.

Also it's very difficult to get a meeting with the school principal or teachers during the summer break.

Update: I was able to get a copy of his test results, and the gifted coordinator agreed to make use of the IAS as a pilot for my son!

This means that he will take the 4th grade ITBS for the "Aptitude", he already has a CoGAT for the "Ability", but the coordinator wanted to use his 3rd grade ITBS results for the "Achievement" part which is supposed to be a grade-level test (he just finished 2nd grade). This seems unfair to me but I don't really want to make him take yet another test just to get this data point. Has anyone used AIMSweb plus scores for the "Achievement" part of the IAS? Any other ideas?