I especially like their "Student Planner Language" aup which is a condensed version of their AUP with kid-friendly wording. Other schools use a Student Technology Pledge or something similar that's easier to refer to and for kids to talk about.
a set of curricular materials designed to encourage high school students to reflect on the ethical dimensions of their participation in new media environments. Through role-playing activities and reflective exercises, students are asked to consider the ethical responsibilities of other people, and whether and how they behave ethically themselves online. These issues are raised in relation to five core themes that are highly relevant online: identity, privacy, authorship and ownership, credibility, and participation.