Presented is a report on the computerized record keeping, service accounting, and evaluation system developed for the Lehigh Valley Association for Retarded Citizens (LARC). Described is the purpose of the LARC system, its current status, its development, and a variety of activities associated with its use. The introduction (Part I) provides background information such as the following: a description of LARC, an explanation of a computer information system, applicability to other programs, and benefits to the agency. Part II, "Design of the System", covers the following topics: overview of the design, computer programs, parts (sub-systems) of the information system, and output the computer provides. Defining and quantifying variables is discussed in Part III, which covers information requirements, types of information gathered, and agency use of the information. Part IV, "Implementing the System", includes an explanation of the status of implementation, agency procedures for gathering and distributing information, and processing the data. Parts V through X cover staff involvement and training, utilization of computing facility, comparison with other systems, system revisions, special studies conducted or under way, and future plans for use of the system. Also listed are three working documents developed on the LARC system. (IM)