Open Academic looks like it will be worth keeping an eye on.

Here’s the blurb

‘OpenAcademic — supporting learners, teachers, and institutions.

Create an intranet. Blog. Podcast. Manage the school website, and all the club websites. Create a private workspace. Manage a class. Share files. Give students the tools to build portfolios that cross academic years and curricular disciplines. Support teacher professional development. Communicate with parents. Build a safe social networking environment within your school community.’

It uses only Open Source software, namely Moodle, Drupal, Elgg, OpenID and MediaWiki. Still in its early stages but I think the vision is excellent.