Yeah, that's good to clarify; my girl attends a special school in the US that originally was designed to keep native Japanese kids up to date with language while living in the US because of a father's international work, etc., sometimes not even for a full semester. They've since had you start accepting US born kids too, so long as they're proficient in Japanese.
They're housed within a public school but are ultimately private so they don't have access to facilities like that.