[Zope] login to pages

Hi, I'm fairly new to zope and my searches for information on my question has come up fairly empty handed. We are running zope for some university professors to put their course notes and other course related materials online. Some of the professors wish to have their content only viewable if the student logs in (not the way the professor logs in to update/add content). I know this is easy enough to do with a perl script or something like that, but I was just curious if zope had a way to do it as well. Thanks Sohaila