Half a Moon: 14 Days of Celebrating Women

Three pre-existing works of mine that fit today's prompt, all on AO3, all G/Teen-rated, all gen or mostly so, all fairly short. [Aside to mods: Castle appears not to have a fandom tag.]

Five College Careers Alexis Castle Might Consider (And the Consequences Thereof)
Castle (with dashes of Buffyverse & NCIS)

What it says on the tin - a Five Things piece speculating about Alexis' choice of college, including two that lead into crossover territory. (Do read the comments; actual students/alums from two of the schools mentioned chimed in.)

Career Day
NCIS/Sarah Jane Adventures

Abby is just packing up her "Career Day" booth at a local high school when an English transfer student happens by - and the conversation takes an unexpected direction. Inspired by a series of stories by Azar featuring Abby as a past companion of the Doctor's.

A Little Self-Knowledge
Nancy Drew (books)

Similar in subject matter to the Castle piece, though here Nancy (very lightly updated to the present day from the yeilow-spine books) is discussing college plans with her Aunt Eloise over lunch. Both Ned Nickerson and the Hardy boys come up in the conversation, albeit for different reasons.