SNAP is a micro-computer based expert system developed by researchers at the Institute for the Study of Exceptional Children and Youth at the University of Maryland. It is specifically designed to train mainstream teachers in special education and provides assistance to teachers in clarifying and solving problems they face in the classroom. Teachers identify problem situations and access recommended teaching techniques in the areas of behavior strategies and teaching/learning strategies. An expert or consulting teacher could use SNAP in inservice training as an additional source of training information; it is not intended to replace human trainers. 1 table, 3 figures, and 21 references