School gets superior food (6)
I believe the answer is:
supper
'food' is the definition.
(supper is a kind of food)
'school gets superior' is the wordplay.
'school' becomes 'S'.
'gets' says to put letters next to each other.
'superior' becomes 'upper' (eg an upper house in a parliament).
's'+'upper'='SUPPER'
(Other definitions for supper that I've seen before include "consumer" , "singing for this?" , "Evening repast" , "Eats late" , "Last meal of the day" .)