It's a specialized school in Japan. Most people don't know about it.

[Dude he just met the guy, he is not going to blab on about how he goes to the SAO survivor facility, even if nobody here even knows what SAO is. Talking about it's practically taboo, and it'd open up a whole different can of worms, anyway. ignoring that canon has not given the school an official name]

We assumed that the cause was "Atroma", as usual. They more or less coughed up to it a little while later. With zero apologies, of course.