My hunch is this: If you homeschool your son for even one more year, he probably will be so far advanced that his achievement scores will accurately reflect him, even if the IQ scores never do.
As you say: How can we know what level Math he could be doing if he was never taught or shown or even exposed? If a Cheetah lives in a Zoo cage, and never runs at all, Is it still a Cheetah?
Love and More Love,
Grinity
And, if homeschooling longer term is viable for your family, you can make this work even without the DYS support. My oldest is doing quite well with advocacy on our behalf and some modifications in her schooling even without DYS. There are a lot of gifted kids out there who aren't in DYS and whose parents are finding a way to make it work for them anyway.
I'd trust your gut. You may not have scores that tell you exactly how gifted he is, but you know who he is and his scores on a test don't change that.
