> Can the messages sent out by the third list have a "reply to" setting that
> directs them back to the second list where the other students and their
> "advisor/mentors" could deal in the second list with the student questions
> and comments in reply to the post graduate level messages coming to them
> from the first list via the third.
 
The Reply-to can be set to any address you wish.  Check out the list
owners manual available at <http://www/lsoft.com>.