The purpose of this project was to develop a prototype expert instructional design system (ID Expert) which would demonstrate the feasibility of a consultation system for use by inexperienced instructional designers. The prototype gathers information from the designer and then makes recommendations for instructional design decisions. The output of the consultation is an instructional design specification which identifies each of the modules needed, the instructional objectives associated with each module, the instructional functions of each module, and the instructional transactions necessary to accomplish each function. This design specification provides the skeleton from which materials can be developed. The domain of the prototype system is limited to goals involving concept classification with a "kinds" taxonomy content structure and goals involving procedures for device operation with a "path algorithm" content structure. The system has been implemented using the S.1 expert system shell (Teknowledge Inc.) and runs on a VAX computer. The knowledge base includes in excess of 400 rules. The report describes: (1) the project's purpose, audience, scope, and environment; (2) the conceptual design; and (3) the implementation design, including a "top level" view of the system's structure, detailed descriptions of system components and knowledge representation, and a description of the user interface and consultation process. (GL)