Funny, we are currently in a similar but opposite situation. My DS was allowed to enter 1st early and achieves adequately-to-well in every subject, so when I asked the school to evaluate him for an IEP for his diagnosed dyslexia and dysgraphia, they refused on the grounds that he doesn't need help. Which he totally does. But they aren't convinced about the dysgraphia, and actively disbelieve the dyslexia.
You might consider an IQ test and perhaps a coordinating achievement test performed privately by a solid professional with experience with 2E kids, if you can swing it. Sometimes it's helpful to have your own feelings backed up by solid evidence, in hand--if not with the school (which may depend on your state/district), at least for your own sanity. Dealing with school personnel who do not understand 2E can be maddening. I often question myself, even though I know I am 95% right 95% of the time in what I'm asking them for.
