I am quite unsure what to do about myself and this experience. I like being nice, but being a dick just gets better results sometimes.
Communication is a lot more flexible than what had happened; that last sentence doesn't apply to many scenarios because it's how you say things that matters a lot more--it just seems that way because of what's being observed in the current time. But those better results come out moreso, only for you. Being a dick to get better results only happens if there wasn't a thought in mind about anything better, in that context.
Do not reinforce something that causes a negative feedback loop (as in, what 'triggers' him and causes him to react badly)
to stop something you don't like if it's how he acts in a benign way; everyone around anyone is an influence to them, and while you may give an impression of 'this is how people may act if you do this', you're also in a place which can influence him for the better--if there's any class aide present, work with them or alongside them since you'll be in his current vicinity to approach. Alongside telling anyone not to do such things, you can follow it up with telling them what they can do to approach you.
He does (kind of) have an aide in the classroom. There's a... I don't really know what she does, but she's an adult that sits through the teacher's lessons, and helps her deal with the class. I think she's an aspiring teacher but I haven't seen anyone have a role like she does. She mostly just deals with the autistic kid's messiness and occasional cluelessness.
Depending on the style being used there, they're present to help them through studies, but also in general to help others with them; it's the theme of inclusiveness and inclusive education--it involves other people too other than just them. (Along with the general note of collaborating with Gen. Education teachers in how to treat students, etc).
But anyway--it's how you handle these that matter, how you think about handling these, rather. Looking down on others in dealing with actions that he does won't help you or how you'll be handling anything similar to that in the future. It may subtly come off as if that's all you could've done with what you had at the time.
are these actual words or are you all aliens with weird alien anatomy
This is why I was very into studying anatomy and physiology (and many other things with latin/greek, or other origins) It didn't sound like common english \o/
...And that many of such things are also named after people.
That was the rather 'more' difficult part to memorize. But fun all around.