This paper describes a ten-week, part-time inservice training course for teachers of severely and profoundly retarded children and an evaluation of the course's effects on teachers' classroom behavior. Five weeks focused on teaching methods, primarily behavior modification and social learning approaches; and five weeks focused on the curriculum content, including verbal behavior and problem solving, plus methods to organize the class and train other staff. Training sessions used lectures, videotape models, role playing, and discussions of interventions with individual children by each teacher. Evaluation of this course comes to the conclusion that such a ten-session, practically-oriented workshop course can change the classroom behavior of teachers in a positive way. (Authors/JD)