Get knowledge from student with merit (5)
I believe the answer is:
learn
'get knowledge' is the definition.
'learn' can be an answer for 'get' (I've seen this before). I'm not sure about the 'knowledge' bit.
'student with merit' is the wordplay.
'student' becomes 'L' (as in L-plates for learner drivers).
'with' is a charade indicator (letters next to each other).
'merit' becomes 'earn' (I've seen this before).
'l'+'earn'='LEARN'
'from' is the link.
Can you help me to learn more?
(Other definitions for learn that I've seen before include "Comprehend" , "Study or digest" , "Take in" , "teach illiterate" , "what pupils do in schools" .)