This report provides data from a survey of a nationally representative sample of more than 2,000 public- and private-school teachers of 4th through 12th grade regarding Internet use by teachers and students. Information is provided about: (1) teachers' access to the Internet; (2) frequency of different Internet uses, including teachers' uses and teacher-directed student use; (3) the Internet's perceived value for teachers; (4) correlates of Internet use and perceived value, including measures of use employed, association between Internet access and use, teaching responsibilities and Internet use, experience and expertise, school support for teaching using technology, and pedagogical beliefs and practices; and (5) multivariate analysis of all predictors considered together (i.e., Internet access, teaching responsibilities, technology expertise, professional experience, school support for teaching, and pedagogical beliefs and practices) and of the factors that most differentiate users and non-users; and (6) conclusions. Data are presented in 28 tables and figures throughout the report. A summary of the study methodology is appended. (AEF)