Web 2.0 applications and mobile Internet devices have added new issues to the safety/access situation for schools. The purpose of this guide is to assist school districts in developing, rethinking, or revising Internet policies as a consequence of the emergence of Web 2.0, and the growing pervasiveness of smart phone use. The Consortium for School Networking (CoSN) Policy Guide addresses these questions: (1) How does policy differ from procedure and does the difference matter?; (2) What are the two major approaches used to develop district AUP (Acceptable Use Policy) policies?;(3) Is the district's AUP a part of or the totality of the district's technology policy?; (4) What are the key federal laws affecting Internet access, safety, and social networking in schools?; (5) How do state laws or district policies affect school districts' Internet policies pertaining to filtering, AUPs, cyberbullying, and cell phone use?; (6) Does the increasing prevalence of Web 2.0 and student-owned mobile devices necessitate updating district ICT (information and communication technologies) policies?; (7) Where can individuals find samples of various exemplary AUPs?; and (8) What are some timely, relevant, and useful resources pertaining to the use of Web 2.0 technologies in schools? A bibliography is included. [This guide was produced by CoSN's Participatory Learning in Schools: Leadership & Policy Initiative. Additional support for this paper was provided by Adobe, eChalk, Gartner, GlobalScholar, Learning.com, Pearson, SAS, and Smart Technologies.]