I would ring student – one who's adored (4)
I believe the answer is:
idol
'one who's adored' is the definition.
(I've seen this in another clue)
'i would ring student' is the wordplay.
'i would' becomes 'I'd'.
'ring' becomes 'o' (letter resembling a ring).
'student' becomes 'l' (as in L-plates for learner drivers).
'id'+'o'+'l'='IDOL'
(Other definitions for idol that I've seen before include "Figure of worship" , "Graven image or greatly admired person" , "Pin-up" , "Graven image or worshipped person" , "A graven image or object of adoration" .)