The intent of this study is to document K-12 Web 2.0 policies, practices, and perspectives in American schools from the perspective of school district administrators. The study was made possible through the generous support of the John D. and Catherine T. MacArthur Foundation. The CoSN study methodology included: 1) the design and field testing of a Web 2.0 survey for three respondent groups: school district superintendents, curriculum directors, and technology directors; 2) the constructing of a representative, random sample from the 14,199 public school districts in the U.S. stratified by four locales (e.g., urban, suburban, town, and rural); 3) the data collection through online surveys; 4) the weighting of findings to ensure demographic representativeness; and 5) analysis and reporting of the results. The report is based on the surveys from nearly 1200 district administrators, including 389 superintendents, 441 technology directors, and 359 curriculum directors. The reader will note that throughout the report, Metiri identifies the respondent group(s) and the associated weighted number of respondents who answered any particular question or series of questions. The complete methodology for the survey is included in the Appendix.