He has high functioning autism, so most of the time he's "normal", maybe a bit childish and has no real concept of social boundaries, but he's not what I've seen other autistic kids be. It's like, he's aware of the real world, and he lives in the real world, but he's trying to match the real world with the world he has in his mind, and sometimes they just don't match, and that's when he gets frustrated and lashes out.
They're home now, and as I predicted, he's in a really bad mood. He wants mum to call the school and tell them he is never coming back, and he starts screaming when she tells him she can't and won't. Apparently, from what he says, he threatened to beat the crap out of his teacher if she wasn't honest with him, and he's only suspended for the rest of the week. He goes to a special school, so the teachers there are aware of his problems, and are trained to deal with kids like this, but none the less, what he did was too serious. Hopefully, he'll calm down enough during this time off to go back to school next week. He'll get nowhere in life if he doesn't finish school...
Oh, and he doesn't have meds/therapy, but maybe after this...