This overview of CD-ROM (Compact Disk-Read Only Memory) technology covers technical specifications as well as applications of special interest to teachers, school administrators, and librarians. Materials available on CD-ROM disks are described, including a variety of reference works, and a directory of publishers/producers is provided. Issues of concern and trends are also briefly discussed, including new technologies that will permit the local addition of data and networking. A nine-item bibliography is provided. (EW)