Academic class remains unruly (7)
I believe the answer is:
seminar
'academic class' is the definition.
(I've seen this before)
'remains unruly' is the wordplay.
'unruly' indicates an anagram.
'remains' is an anagram of 'SEMINAR'.
(Other definitions for seminar that I've seen before include "Academic class" , "Training meeting" , "University discussion" , "Small discussion group for advanced students" , "Short intensive study course for marines" .)