Primary research (in-depth telephone interviews) was conducted among elementary and secondary school educators in Spring 1995 to determine usage, attitudes, and barriers to usage for five electronic in-school services: Cable in the Classroom; computers, laserdisc or CD-ROM; Internet; online computer services such as America Online and Prodigy; and Channel One. A total of 1,000 educators with cable in schools were interviewed: 600 teachers and media coordinators, 300 principals, and 100 school district administrators. Survey data are analyzed for teachers and media coordinators separately from principals and administrators. Results show that: (1) in schools connected to cable, 85% of teachers and media coordinators used computers, laserdisc or CD-ROM, 58% used Cable in the Classroom programming, Internet and online services were used by 16% and 13% of teachers and media coordinators, respectively, and Channel One was used by 19%; (2) administrators and principals tended to underestimate the extent to which teachers and media coordinators were using electronic services; (3) factors such as lack of knowledge about the service, workshops or training, time to learn how to use, and access to cable, telephone or data lines were significant barriers; (4) well over half the respondents felt that online services and the Internet prepare young people for the information age, facilitate exchange of information between schools and learning centers, support schools and teachers through community services, and assist teachers' professional development; (5) educators' perceptions of each electronic service seemed to be influenced by the extent of their training; (6) Cable in the Classroom programming was considered much easier to use and more effective in teaching whole classes of students than either the Internet or online services, and was considered somewhat easier and more effective than computers, laserdisc, or CD-ROM; and (7) the most frequently used in-school television programming was provided by PBS (Public Broadcast System), the Discovery Channel, and CNN (Cable News Network). Eleven figures and one table illustrate data. (MAS)