This second in a series of eight learning modules on professional role and development is designed to give secondary and postsecondary vocational teachers aid in serving their profession by helping them become aware of the various ways they can serve it (e.g., through active support of organizations representing the profession, volunteer work on committees, support of legislation affecting the profession, and publicity for new ideas, problems, issues, and concerns). The terminal objective for the module is to serve the teaching profession while working in an actual school situation. Introductory sections relate the competencies dealt with here to others in the program and list both the enabling objectives for the three learning experiences and the resources required. Materials in the learning experiences include required reading, self-check quizzes with model answers, a case study to critique and a model critique, and the teacher performance assessment form for use in evaluation of the terminal objective. (The modules on professional role are part of a larger series of 100 performance-based teacher education (PBTE) self-contained learning packages for use in preservice or inservice training of teachers in all occupational areas. Each of the field-tested modules focuses on the development of one or more specific professional competencies identified through research as important to vocational teachers. Materials are designed for use by teachers, either on an individual or group basis, working under the direction of one or more resource persons/instructors.) (JT)