EM, how wonderful that your DS has the opportunity to use his math gifts in this way, especially as he is seeing, tangibly and early, that they have value in multiple contexts!

And yes, a lot depends on the clinical skills of the evaluator, which is, of course, why in-person one-to-one assessment is still considered the gold standard. (Now ask me how my profession feels about developments in assessment practices resulting from the advent of remote learning!)

...pronounced like the long vowel and first letter of the alphabet...