Is there a way I can look up a class mate name from a previous class that I have completed? I'm trying to get in touch with a friend, but I can recall their last name.
If you cannot see the "people" menu item when you check the course then no you will not be able to find their name. Your only option would be to contact the course instructor and see if they would be willing to disclose that information to you, and even if they were, for legal reasons they may not be able to.
Hope this helps,