I had the great opportunity to attend the Consortium for School Networking (CoSN) conference in Washington, DC this week. (3/9/08-3/12/08). One of the better attended sessions was dedicated to open source? software in the K-12 environment. Some of you might be interested in checking out the CoSN website pages dedicated to open source (esp. the info about Moodle?)
http://k12opentech.org/k12ot/