Here is where we begin to realize that she and Dean would get along rather famously - if only by dint of the realization that they felt the same way about things like school and probably education in general, and sitting still long enough to get a good one. Sam is the complete opposite, which, it's anyone's guess how someone can be so different from an older sibling, but it goes without saying at this point that he and Dean are just opposite sides to the same coin.

There is no one of them without the other.

He thinks about that for a second, chewing at the inside of his lower lip. "Dunno. But I know I wanna go to college. Find something to do, y'know?" A beat. "What about you?"