This sounds intriguing... I will start to look into a Journal too.
Meanwhile, Will this allow a student to document work with edit capability while others can leave comments for that student without editing anything for that student journal? Being a classroom. will I set up a journal for each student or one journal with many sub-journals?
The same question can go for a Wiki, I suppose.
A forum could work only if I can have a student editable thread that no other student can edit but just leaver comments and the student editing is to go on for the entire term. You have pretty much knocked that idea down but it might clarify my goal.