The biggest priority is to work on understanding your sons IQ and achievement scores.

It's hard to make others understand if you don't understand yourself. Reading Ruf was helpful to place my DD's LOG and what she is capable of doing. I say capable because what they can do and are "allowed" to do, even what you might want them to do, can differ.
Get a good understanding of where he really and what your goals are and what his goals are so you can advocate in his best interest.
When I look at Ruf's Levels (on Davidson or maybe it's Hoagies.) It get's confusing because I don't remember what he did. Is there more in the book that clarifies lOG. Is this a book I should own?
What would you suggest how to understand sons IQ and achievement scores? I have asked here in many ways and still I'm lost. I do understand some generaliation- like he needs less repetions, he is not studying.
I think in short term goals,this year, I would like him to stay with his peers for the majority of the day and move him 2 grades up in GT pull out for Math Or up 1-2 grades for English and see what happens. He would need to elliminate some work to do this. School is afraid of this. Should I just try and talk to the principal again or wait for DYS to kick in. I feel like we are running out of time this year.
If I were to ask my son his goal it would be Get him out of his busy work and let him learn something in a way he is capble without isolation. I'm not sure he would be mature enough to say this even to me. I have already requested this, they did a little adjustment-but not enough. I even have supplied some work he loves to do so it's easy for the teacher. But How can I prove he doesn't need something when teacher's will not pretest? or just skip it.