In particular, if any of the children evaluated are in special education, parents have fairly strong leverage to punish school districts who are doing stuff that no one could think would work. Attorneys and non-attorney advocates in all 50 US states are available to help the parents, who often have no idea what their rights are or that the school district is being foolish.

Separately, the American's with Disabilities Act prohibits retaliation against anyone who acts to protect a disabled individual's rights. Alas, proving this is a difficult matter. You might consider looking at my post on one way to document verbal statements in writing.

And for clarity, disabled in this context is a broader label than cognitively impaired, blind, or deaf. If a child has a medical condition that impairs their ability to learn, they are a "child with a disability" under the Individuals with Disabilities Education Act.

Disclaimer: This is a general statement of the law, not legal advice. Consult your own attorney, because reading this does not create an attorney-client relationship.