Kid leaving school? Eat here! (7)
I believe the answer is:
leather
'kid' is the definition.
(I've seen this before)
'leaving school? eat here' is the wordplay.
'leaving' indicates a hidden word (the answer must leave the confines of the clue).
'LEATHER' can be found hidden inside 'school eat here'.
(Other definitions for leather that I've seen before include "Cured animal hide" , "Treated animal skin" , "Polishing cloth" , "Dressed skin" , "polish" .)