I can't seem to find the discussion thread for the question that showed up in my e-mail, but my answer would be to create sections within her history class. Then she only needs to work on one page /site and all the kids will be separated by section. It's the easiest way.
Example: I had three sections of psychology. I made one site, had three sections, and the kids are then beautifully separated in terms of handing things in and discussion boards, etc.
Any questions please let me know