This report summarizes way in which computer technology and communications have been found to enhance learning in K-12 classrooms. This discussion of the learning-related outcomes of computer technology in K-12 education assumes: that the technology is used in appropriate ways, and that the technology is used in the course teaching, by a teacher who both knows the subject matter and understands the role(s) of technology-based methods in presenting subject matter and in encouraging and enabling students to explore. Information summarized here reflects published and unpublished sources and direct observation. The report consists of the following chapters: (1) Performance in Basic Skills; (2) Performance in Specific Subjects; (3) Preparation to Become Productive and Informed Citizens; (4) Development of Critical Thinking and Information Evaluation Skills; (5) Benefits of Being Able to Access Information in New Ways; (6) Overall Performance Enhancement; (7) Other Ways in which Technology Makes a Positive Difference. Project results show increased student learning for students with online use. (AEF)