Teachers can set up a meeting space similar to a wiki where they can send notes, files assignments and links to their students and other teachers.

Create useful diagrams online. This could be very useful for graphical organizers as a teacher when assisting in note taking and linking events in Social Studies, Literature and Science. Also could be very useful with graphical representations of Math

Online organizer for notes and to-dos. Encourage its use as a teacher so students can track their grades, become familiar with technology, and stay up to date with project due dates, homework, etc...

Google Docs will store documents for access to groups, and also allows students who may not be able to afford nice word processors and spreadsheet creators to use the same tools as everyone else. This would be a great tool for teachers trying to incorporate a e-community into their classroom and would be able to level the playing field for disadvantaged students.