Play for each class (7)
I believe the answer is:
perform
'play' is the definition.
(I've seen this in another clue)
'each class' is the wordplay.
'each' becomes 'per' ('per' can mean for each).
'class' becomes 'form' (form class is a kind of class).
'per'+'form'='PERFORM'
'for' acts as a link.
(Other definitions for perform that I've seen before include "Carry out (duties)" , "Carry out (action)" , "Act - accomplish" , "act on stage" , "Carry out, accomplish" .)