DD9 wasn't trying to brag when she mentioned this, it was just a "This is weird," kind of thing for her, because she's the one in the GT classes who has also been grade-skipped, so she's among gifted peers and a year younger to boot. Anyway, apparently her classmates are telling her, "You're the smartest one in class," based on what they're seeing on each others' graded papers.

DD later mentioned that she's the only one who passed gifted screening on her first try.