University involved in class meeting (5)
I believe the answer is:
forum
'meeting' is the definition.
(forum is a kind of meeting)
'university involved in class' is the wordplay.
'university' becomes 'u'.
'involved in' is an insertion indicator.
'class' becomes 'form' (form class is a kind of class).
'u' put inside 'form' is 'FORUM'.
(Other definitions for forum that I've seen before include "Meeting for debate" , "Medium for discussion" , "Place for open discussion" , "A meeting to exchange views" , "Arena for debate" .)