Graduate has to report about dance (6)
I believe the answer is:
ballet
'dance' is the definition.
(ballet is a kind of dance)
'graduate has to report about' is the wordplay.
'graduate' becomes 'BA' (someone with a Bachelor of Arts degree).
'has' says to put letters next to each other.
'to report' becomes 'tell' (to report is to tell someone about something).
'about' says the letters should be written in reverse.
'tell' backwards is 'llet'.
'ba'+'llet'='BALLET'
(Other definitions for ballet that I've seen before include "Dance art form" , "Art of the Kirov or Bolshoi" , "The theatre of dance" , "Artistic dance form" , "Story performed to music by dancers" .)