Stay in pig pen enhanced principal's reputation (8)
I believe the answer is:
prestige
'reputation' is the definition.
(I've seen this before)
'stay in pig pen enhanced principal's' is the wordplay.
I cannot quite understand how this works, but
'stay' could be 'rest' (synonyms) and 'rest' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for prestige that I've seen before include "Widespread respect for high quality" , "Widespread respect attracted through achievements" , "Kudos" , "Reputation based on achievements" , "Status, reputation" .)