School prestige returned (4)
I believe the answer is:
eton
'school' is the definition.
(famous UK public school)
'prestige returned' is the wordplay.
'prestige' becomes 'note' (someone 'of note' has prestige).
'returned' is a reversal indicator.
'note' written backwards gives 'ETON'.
(Other definitions for eton that I've seen before include "Public school, established in 1440" , "Berks college" , "School near Slough" , "Easy to understand" , "English college of note" .)