Remain significant, as might relegated student of the past? (2,4,2,7)
I believe the answer is:
go down in history
'remain significant' is the definition.
(be important in history)
'as might relegated student of the past?' is the wordplay.
I cannot really see how this works, but
'as' could be 'in' (I've seen this in other clues) and 'in' is present in the answer.
'relegated' could be 'down' (as in going down a league in football) and 'down' is located in the answer.
'of' could be 'o' and 'o' is present in the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is present in the answer.
This explanation may well be incorrect...
(Other definitions for go down in history that I've seen before include "Come to grief in a GCSE subject" , "be remembered for a long time" .)