Vile student has MeToo upset (9)
I believe the answer is:
loathsome
'vile' is the definition.
(I know that vile can be written as loathsome)
'student has metoo upset' is the wordplay.
'student' becomes 'l' (as in L-plates for learner drivers).
'upset' indicates an anagram.
'has'+'metoo'='hasmetoo'
'hasmetoo' anagrammed gives 'oathsome'.
'l'+'oathsome'='LOATHSOME'
(Other definitions for loathsome that I've seen before include "gross" , "Detestable" , "Horrid" , "Disgusting, nauseating" , "Repulsive" .)