Teacher from Michaelmas term (6)
I believe the answer is:
master
'teacher' is the definition.
(I've seen this before)
'from michaelmas term' is the wordplay.
'from' indicates the answer is hidden within the clue.
'MASTER' is hidden in the letters of 'michaelmas term'.
(Other definitions for master that I've seen before include "Strong chess player" , "Overcome; great artist" , "Expert" , "Main; overcome; original recording" , "'Jack of all trades and . . . . . . of none'" .)