As I previously mentioned, I am on a lot of e-mail lists. One is particularly appropriate for March and Engineered Systems’ focus on the K-12 school market.
The Green Schools Initiative is chock full of information on how to green your school. In the February newsletter for instance, is news on the Cool Schools Campaign and information on how to sign up for the sustainability listserv.
While the focus of the site can be broad, the ideas of energy efficiency as well as green building design are well represented. It may be just what you are looking for!