My dd also has a disability, we also had issues with the pe teacher.
Unfortunately it wasn't until
I took a picture of an injury, with much swelling and bruising, caused by the pe teacher pushing dd too far
insisted on a meeting with head and pe teacher during which I showed them both the results of the pe teachers deliberately ignoring not only my communications (and I'd met with pe teacher and explained the condition etc already on a few occasions) but even a letter from dds consultant!
Told them if it happened again I'd be making an official complaint and that I was seriously considering legal action (and I had made an appointment with an appropriate agency which I showed them the letter confirming) on the basis they were failing in their duty of care and discriminating against a disabled child.
That the silly cow reined it in!
I've seen several threads by other parents who've had similar experiences too.
WHY they think they know better than the medical experts I really don't know!
It's disablist, bullying bollocks to be honest.
"Children get moaned at for all sorts. They have to learn to brush it off and can’t do that if we placate every wobble." Oh ffs! What victim blaming, prejudicial nonsense!!