On which of the items on the medical form would one write "Yes" to indicate autism?
The closest one is
Behavioral health, mental or psychological problems (Panic attack, fear of closed or open spaces)?
I would argue that autism is not contained in that category.
I would argue that it is, although not explicitly enough to justify something like ejecting them from the course without refund for not disclosing on the form. I also do think there's some grey area with these things, and I don't see any reason that people who are sufficiently high functioning that it definitely won't interfere with their ability to succeed in a normal course without any accommodations would need to disclose. It's pretty clear though that panic attacks, claustrophobia, and agoraphobia are simply examples, and not the only behavioral, mental, or psychological problems that are included in the questions, and autism definitely falls within the scope of "behavior health, mental or psychological problems."
When I filled out the paper work for my open water course, I actually did answer "yes" to that question for myself. I have a long-standing diagnosis of dyslexia, which now manifests primarily as a very slow reading rate (I had trouble learning to read as a child, but eventually caught up reasonably well except that I still read extremely slowly), and since that does effect my ability to successfully complete tasks requiring significant reading within a short time, and the open water course involves textbook/classroom instruction and a written test, I disclosed for this just like I do for my classes at school. I also have ADHD, which also effects my classroom work, but I also consider it relevant to diving because diving does require reliably attending to important safety cues and such, and becoming too distracted, or, probably even worse, hyperfocusing on something irrelevant (e.g. becoming completely absorbed in staring at particular piece of seaweed for half an hour) could be a significant danger. I also have significant social anxiety, and actually debated whether I should dive at all because I was concerned that it would interfere with my ability to ask for help if I needed it (not an irrational fear given my history with that), although I ultimately determined that as long as I don't go on any dive trips where I don't know anyone in advance (in that situation, I'd probably end up diving with a buddy rather than asking anyone if I could dive with them) it doesn't interfere with actually diving, only with my ability to find people to dive with, and consequently to dive more often.
Since I did disclose that information on the medical forms, I then discussed it with my instructor, and we decided that nothing in my psychiatric history would be a problem for my learning to dive. In this particular instance, we decided that it made sense for me to simply change my answer on the form rather than being evaluated by a physician (this isn't something I'd generally recommend, but because it was a psychiatric rather than medical issue, and as a clinical psychologist familiar with my history my mom was more qualified than any physician to clear me to dive in this instance), but the important thing is that I did talk to the instructor about it up front, and made sure that if there were any accommodations I'd need, even if it was as trivial as extra time on the written test, we'd have arranged it in advance and it wouldn't cause any problems for the course.
I also think that whether or not it's on the form, it's still the responsibility of the parent and/or student to disclose these things and discuss appropriate accommodations. I've always be able to do well in mainstream classrooms, but because of my dyslexia and ADHD I'm entitled to some accommodations, which include extra time on exams and papers. When I was younger, it was my parents' responsibility to inform the school about my needs and initiate whatever needed to happen with that, and as an adult, it's my responsibility to talk to my professors about it
at the beginning of the semester, at least a few weeks before I have a paper or exam for which I'll need extra time. If I were to just show up to an exam and ask for extra time, on the spot without any advance notice, I can be fairly certain that they'd refuse (possibly with one or two exceptions, who would just be very disappointed in me for handling it so poorly). And if I did that, and failed the class as a result, that would be entirely my own fault.
It's just not appropriate to ask for accommodations at the last minute, or not to ask for them at all when you know full well that you or your child needs them, and considering that these boys are struggling with the regular class enough to be considering options like HSA, it's unlikely that they were even in mainstream classes in school and they almost certainly at least had some form of IEP, so there's just no way that the dad hasn't been dealing with this for years, probably at least close to two decades or longer, and I can't imagine how he could have thought it would be okay to just stick them in a regular class and not even discuss it with the instructor in advance.