I'm completely in favor of disclosure because it gives the adult, you need to trust, the information they need to reconcile your child's behavior. I'd much rather have an instructor "get it wrong" with the right information, than to get it wrong with no information whatsoever. At least it gives the instructor a chance to get it right. My opinion, based on my parenting experience raising one child who is adhd with a hint of Aspergers and another child who is adhd with a screaming hint of Autism, is that people who treat them differently are trying, and those who react badly won't get it right anyway and will react as if the kid wants to cause a problem........ Really, the good people will do better because they'll use the information, and the bad people will continue to care only that a child "fits" in their well defined box.
I also feel that telling teachers and instructors about my child's difficulty makes the statement that their disorders are normal and need to be treated as they'd treat any other child who has a problem they wish they didn't have. I do this as calmly as I'd describe the weather, and I do it, as often as possible, when my child is present and can hear there's no blame being placed on them for their quirks, and no expectation that the teacher perform miracles other than to accept that "we're all in this together."
Really, it's no picnic for anyone involved, but especially for the child who has a challenge, plus the burden of getting people to relate to their challenge the same way they'd relate to a child confined to a wheel chair...... by immediately recognizing the challenge and doing what any compassionate person would do, help as best they can.
