Do some course work? (3)
I believe the answer is:
mow
'do some course work?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for mow that I've seen before include "Cut grass on lawn" , "'Cut down, hay, say (3)'" , "Cut (e.g. grass)" , "Cut down, usually grass" , "'Cut, grass say (3)'" .)