Fees for periods in school (5)

I believe the answer is:

terms

I'm a little stuck... Click here to teach me more about this clue!

'periods in school' is the definition.
'terms' can be an answer for 'periods' (term is a kind of period). I'm not sure about the 'in school' bit.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for terms that I've seen before include "Parts of the academic year" , "when schools should be open" , "Phrases" , "Divisions of the academic year" , "Academic periods" .)

I've seen this clue in The Globe and Mail.

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.