Substitute teaching should be a common topic for university teacher education courses. Many new teachers will use substitute teaching as a route toward gaining a full-time position. A program is described in which student teachers participated in actual substituting experiences. A relatively simple procedural switch of students was arranged late in the student teaching period after student teachers had assumed a major responsibility for the instruction within their classrooms. Principals and cooperating teachers were fully informed of the objectives and practices of the switch. The student teachers were given directions concerning the kind of information to leave for their substitute, such as lesson plans, timetables, and procedural information. On the day of the actual switch, faculty consultants visited the schools involved to be on hand in case of questions or problems. In the final stage of the project, student teachers and cooperating teachers filled out evaluation forms concerning the project, and each faculty consultant met with his group of student teachers to share experiences and answer questions. The success of this project led to the conclusion that substitute teaching can be an important aspect of preservice teacher education, helping student teachers understand some of the problems involved both in leaving and taking over a class. (JD)