For some reason I can't view the comment to this posting, but I'm wondering if you are working on an interface between the pencentric or tablet idea and the microsoft surface. I'm thinking that it would be great it a student had a tablet (replacing their need for paper notebooks and books) which they could transport between school and home, and then, when in class interface that work with the surface in order to work collaborative with their classmates.
This idea presents security issues. The tablet information would have to be secured in some way from off topic, outside of school information interference. We wouldn't want an interface from a student's tablet to corrupt the classroom environment. But if dealt with appropriately, this could be a wonderful tool for the high school learning environment. (Maybe even earlier grades depending on security, durability, etc...)