Establish seat of learning (9)
I believe the answer is:
institute
I believe this clue is a double definition.
'establish' is the first definition.
(synonyms)
'seat of learning' is the second definition.
(educational institute)
(Other definitions for institute that I've seen before include "college" , "Organisation for promotion of scientific or educational activity" , "Establish - seat of learning" , "Begin (legal proceedings)" , "order as before" .)