A computer assisted instructional program was developed for teaching the rules of filing to library student assistants in the New York Institute of Technology. The procedure used in developing the program was based upon the Interservice Model of Instructional Systems Design (ISD) developed at Florida State University. The first of seven chapters in the report provides an introduction to the project (including background, a statement of the problem, a description of the project's purpose, and an overview of methods and procedures employed). The next five chapters describe activities at each stage of the development process: analysis, design, development, implementation, and evaluation. The final chapter includes a summary and recommendations. The 12 appendixes, which constitute more than half of the report, include the pre- and posttests, personal data and summative reaction questionnaires, the task analysis, a skills and interests questionnaire, project PERT and Gantt charts, screen design prototypes, and a user's guide. Tables and figures appear throughout. Field test data are also included. (26 references) (GL)