Earlier quoted context omitted.
That's true, but astigmatism: - is clearly defined - can be measured objectively (with autorefractors, keratometers, corneal topographers) - can be corrected cheaply ($20 glasses) to eliminate any disadvantage in performance or efficiency Neurodivergence: - is not clearly defined - cannot be measured objectively, and is diagnosed using behavioral observations and cognitive tests - may rely on 'accommodations' that, i…
You misunderstand how neurodivergence is be handled in education. It isn't a single diagnosis, and does not have a single accommodation. We use a catch-all word because it makes it easier to talk about as a collection of issues, but that's not how it's diagnosed or treated. If you would find wearing noise blocking ear muffs, or sitting on a bouncy chair, or using a typing instrument instead of writing, improves your…
The thing these examples have in common is that they don't give you any inherent advantage that invalidates the purpose of the test. (Assuming it's not a handwriting test, or an 'ignoring distractions' test.)
I would group all of these along with the examples I gave: corrective glasses, and wheelchairs. They should be available to all students, without diagnosis or discrimination.
If you think limited time on tests doesn't serve a useful purpose, then why give 'extra' time to only some students, and not to all students?