Once students and teachers have published their Intranet sites, how do others navigate to see them?
You can simply type the full address of someone's Intranet site in the URL bar of a browser - serveraddress/~shortusername, but this is dependent on 1) a fair bit of typing, and 2) knowing everyone's short user name!
A neater option is to create an Index page (or pages), with direct links to students' and teachers' web sites.
There are a couple of different options available to do this, depending on the size of your school, your school's Intranet setup, and it's penetration in the school.
This page provides information about the options for setting up an Index page(s) for students' and teachers' intranet web sites, hosted on a Mac OS X Server, or other Apache web server.