I think more IQ testing is not going to get you where you need to be at this point and time.
I would play the what if game...
If his IQ had come back higher what would be different at school? Do they have a real G&T for kindergarten? I think many schools do not.
If the scores had come back higher, would things change with his attention and sensory issues?
What would make school life better for your son? You can advocate for those things without the scores (but agree that would have made life easier!!!).
Best of luck.
