Don't know quite where to start with this one. I work for a music education institution. One child has ADHD (confirmed diagnosis) and, I suspect, ASD. Lovely boy, lovely family. Experiencing some difficulty with things others take for granted - ie he fidgets which distracts the others, sometimes loses focus. The person in charge doesn't / can't accept that this child can't help it, finds him irritating, and - frankly - would prefer we weren't there. I, instead, am arguing about getting support but I'm not sure exactly what or where to start. I've googled 'ADHD music teaching support etc' and it really isn't a thing.
Also, if the child were 'sent away' for, basically, not fitting in, wouldn't that be discrimination? Can you apply disability discrimination to something which is basically an afterschool activity?
FWIW I am 100% on the child's side and in danger of falling out big-time with my colleagues over this. I'm out on a limb and don't have anyone to talk to at work who even remotely sees things from my point of view.