Zimmer Twins is a site I first covered around 2 yrs ago for digital storytelling. However, now thanks to iLearn Technology, I have learned that Zimmer Twins now has an educational portal for their great cartoon/movie making site. This new version dedicated to schools is great. A paid account lets teachers create a class of up to 40 students. Also, each class gets a blog, the ability to publish/comment (which is all moderated by the teacher), collaborate w/ others, etc etc.
I highly recommend checking out Zimmer Twins by clicking here!!!