This paper describes the development of a new technique to assess clinical problem-solving skills in medical students. The procedure enables each step in the solution of clinical problems to be evaluated independently by providing feedback to students at each decision point. There are several unique features, including the incorporation of some aspects of the problem-oriented medical record. Students were required to read an extensive data base and construct problem lists, order diagnostic tests, and plan for the management of the patient. The technique was designed to (a) be administered to large groups of students, (b) be easily scorable, and (c) overcome some of the difficulties inherent in previously developed means of assessment. © 1974 Association of American Medical Colleges.