It makes sense to have pages which define concepts for a class in a category that only depends on the class. I created several pages on MA351, but haven't contacted either professor for the section yet. Thus it makes sense to have a link to house the MA351 pages, but it's a little different since the items there wouldn't have a specific year, semester, or professor.
Currently what I have written up is a MA351 page, similar to a table of contents for course material.