Summarized are two reports of a federally funded project on the use of artificial intelligence in special education. The first report, "Artificial Intelligence Applications in Special Education: How Feasible?," by Alan Hofmeister and Joseph Ferrara, provides information on the development and evaluation of a series of prototype systems in special education administration, training, diagnosis, and instruction. The second report, "Assessing the Accuracy of a Knowledge-Based System: Special Education Regulations and Procedures," by Alan Hofmeister, discusses procedures used to develop and evaluate one of these systems. The project evaluated a range of expert-system software and hardware, including computers of all sizes, to determine their potential usefulness in addressing special education problems. Prototype systems were then designed, including four systems designed to give a second opinion on classification decisions, a system to advise teachers dealing with behavior problems, and a system called "Mandate Consultant" which considers the appropriateness of the decision-making process used to develop an individualized education program. "Mandate Consultant" was selected for full development by the project and received extensive field-testing. Data on the prototype systems' validity, user acceptance, and administrative support suggest that expert systems are potentially effective in the areas of diagnosis, planning, and instruction, and are valuable for training purposes. (JDD)