Prefix for school or teen

I believe the answer is:

pre

(Other definitions for pre that I've seen before include "Combining form meaning before" , "Before starting" , "Before, prior to" , "Before or ahead of" , "Prefix meaning before" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.