Good academician taking some French classes (6)
I believe the answer is:
grades
'classes' is the definition.
(grading is a kind of classing)
'good academician taking some french' is the wordplay.
'good' becomes 'g' (abbreviation).
'academician' becomes 'ra'.
'taking' says to put letters next to each other.
'some french' becomes 'des'.
'g'+'ra'+'des'='GRADES'
(Other definitions for grades that I've seen before include "Assigns rank to" , "Ranks in order" , "Ranks or classes" , "Standards of performance awarded to students" , "Levels of proficiency or value" .)