probably very
I've been around autistic and aspberger kids. Its not pleasant. Its no reason to publicly humiliate the kid though. I read in another article that the kid's only friend in the class voted for him to stay, but the teacher intimidated him into changing his vote by calling out his name sharply. Still there is still hope, 2 kids for whatever reason voted for the kid to stay. I hope my kids would have the fortitude to do that were they ever forced into such an awful situation by their teacher.