Nurtured in a seat of education (3)
I believe the answer is:
fed
'nurtured' is the definition.
(I've seen this in another clue)
'in a seat of education' is the wordplay.
'in' indicates a hidden word.
'FED' can be found hidden inside 'seat of education'.
(Other definitions for fed that I've seen before include "Gave food to (someone)" , "Nourished" , "US agent" , "Dished up food" , "American cop" .)