Ever pinch some comic in school? (13)
I believe the answer is:
comprehensive
'school?' is the definition.
(comprehensive school is a kind of school)
'ever pinch some comic' is the wordplay.
'comic' indicates anagramming the letters.
'ever'+'pinch'+'some'='everpinchsome'
'everpinchsome' is an anagram of 'COMPREHENSIVE'.
'in' acts as a link.
(Other definitions for comprehensive that I've seen before include "Hence improves (anag.)" , "Of very wide scope" , "school" , "All-inclusive" , "All-embracing" .)