One of five booklets designed to help vocational education teachers and administrators relate more effectively to handicapped students in their classrooms, this booklet discusses the role of medical, social, educational, and psychological tests in estimating a handicapped student's potential and in designing an appropriate vocational program. Specific topics discussed include the following: work evaluation programs, work evaluation systems, work experience programs, work experience settings, advisory committee, and advisory council. A self-test is included for pre- and posttest evaluation. (TA)