Describes over 25 firms that have listed software applications that can be used by schools. Each listing includes the name of the software and a general description of its utility. Tables provide detailed listings of the software's functions, the type of support the company provides, and the hardware on which the software can be run. (MLF)

Local area networks (LAN) are privately owned communication systems that connect multivendor devices at high speed. As microcomputers become more common in schools, user interest in sharing information, software, and peripherals will increase. A basic understanding of the operation of all LAN's can be gained by knowing four elements: media,…