Not entirely where studying may lead one? (2,1,6)
I believe the answer is:
to a degree
'not entirely' is the definition.
(I've seen this in another clue)
I don't understand how the remainder of the clue works.
(Other definitions for to a degree that I've seen before include "where studying at Oxford, say, may lead" , "Somewhat" , "Partly" , "Rather!" , "though not entirely" .)