I think it's pretty clear that your daughter is gifted, and frankly, all three measures show evidence of that. You must be feeling very frustrated!
I think your best option might be to pursue the 2E diagnosis if you feel like your daughter's scores were affected by the group nature of the testing with CogAT (although I'm honestly baffled by his comment that the WISC is used to assess students with disabilities. Is there someone over his head who might understand the WISC better, because it seems like he doesn't even understand the test). I definitely understand your unwillingness to accept his verdict, because it just doesn't match up with what you know to be true. I wish I had better advice. Good luck!
