DS is around the same age and has dysgraphia and hypotonia. Standardized hand strength testing showed his hand strength to be around the 2nd percentile. He looks incredibly awkward when he writes and it looks like preschool scribbling. He has an IEP. He is accelerated 3 years for math and will be skipping another year. He shows minimal written work for math and does what he can in his head. The school is supposed to be teaching him AT (assistive technology) for math, although this is not really happening as far as I know. But the key is to get people to understand the challenge (and understand it yourself) and then get the appropriate accommodations/modifications. The more flexible the teacher is, the better she will do. This could include reducing the amount of problems, giving extended time, using a calculator or cheat sheet for the math facts and all the computations, typing or speech to text, etc. Work with her and see if you can figure out what the challenge is. Handwriting? Fluency? Attention? Is she automatic with the math facts? Then go from there. My experience is that testing does not necessarily give answers either, because gifted kids tend to score at least average even if they are massively struggling.