eLearning tools for WP or WPMU

Anyone know of any plugins or apps that can be integrated into a WordPress or WPMU site that covers teaching math, technology, etc...? What I need is a place where members, mainly kids and teens, will be able to log in and access modules that cover basic skills like typing, mathematics, english, technology, etc.. I know there are components written for Joomla but am hoping something exists for WordPress.

ANY direction is greatly appreciated..

UPDATE: New WPMU DEV release CoursePress will knock your socks off :slight_smile: