I think sensory issues are way more important than most people acknowledge - all the thoughtful programming in the world can't help if it's delivered in an environment that is not conducive to learning for a particular individual.
We had to switch our child from a huge public school to homeschooling and then Fusion for a quieter, calmer, more individualized education - he cannot handle large, noisy classes, pacing that doesn't match his own preferences (too fast or too slow), and chaotic transitions with next to no downtime. He's only been there for a few weeks so it's hard to say for sure, but he actually GOES every day, and at the end of the day, says he enjoyed it. We're hopeful we can "graduate" him to a more traditional but VERY small private school after a year at Fusion, but it's still up in the air.
I recognize that Fusion or homeschooling is out of reach for most families, and they may not be the right solution for your child's needs anyway. Just saying really dig into the sensory/environmental factors and see what you can do to really solve your kid's concerns there.