Massively Minecraft If you want a Minecraft server that you can get to from home. Check out http://massivelyminecraft.org/. It's a server just for school kids with challenges and lots of other cool stuff. You have to apply to get access, but it looks pretty cool. It's closed until Sept 30, but will reopen then.
Tiger Tech Ed on Facebook This site is a community for the students of the various GMS Technology Education courses. Ask a question, get help, or even just find someone to play Minecraft with.
Tiger Tech Ed Wiki (aka the Tech Ed Wiki) Additional material and resources found here