Ummm, doesn't look like anyone knows the answer to that question huh...
Well, I've also wondered about another thing. Forgive me for sounding noob-ish, but at the end of the anime (and manga, I guess, even though i haven't read it all...) aren't 2-C becoming 3-C in senior high (i.e. year 12??)
So why is it that at the end of San Gakki ep 26 the students say: "...how nostalgic..." about wearing their old uniforms again, which leads to the spoiler tag below. I don't really understand why they'd be wearing different uniforms when moving up a year group, could someone explain where I've gone wrong? Thx.