Digital giant Google has been working on Google WAVE for sometime now. It COULD revolutionize the way in which we work in groups. A group like the Barton School BIG group might want to consider this. The links below give some introduction to it, right now it is in limited preview mode so you can't immediately try it out. Could this be the "wave" of the future? Sorry, could not resist that.
Official Google information about Wave
And a blog which isn't entranced by Wave