This is a hub for various WordPress plugins that’s useful to the educational world. There are currently two plugins listed there, WPBook (a plugin to make a Facebook Application using your WordPress blog) and Courseware (a plugin to manage classes with WP). Both of which sounds pretty awesome. There’s also Gradebook, a plugin that allows you to display grades securely only to students, which is still under development.
I’ve developed with Moodle before, and boy was that thing complicated. A WordPress solution like this could be the way to go in the future.