A bunch of kids at my sister's high school have Nextel phones and use that 2-way thing at school, sometimes during class from what I hear. It makes me think of Clueless or something, when Cher and Dionne call each other between classes and then wind up still talking on the phone when they're right next to each other.
Cell phones and pagers were taken away when I was in high school though...supposedly they were classified as drug paraphernalia.