School, a drawback for Oscar? (7,5)
I believe the answer is:
academy award
'for oscar?' is the definition.
(Academy Awards are informally called Oscars)
'school a drawback' is the wordplay.
'school' becomes 'academy' (academy is a kind of school).
'drawback' becomes 'ward' (I've seen this in other clues).
'academy'+'a'+'ward'='ACADEMY AWARD'
(Other definitions for academy award that I've seen before include "Oscar" , "Special achievement" .)