More and more institutions are now requiring a teaching portfolio as part of the essentials for tenure, and many for job applications as well. A portfolio may simply consist of the syllabi and teaching evaluations you have compiled. Portfolios can also include peer reviews and self-reflective narratives about your teaching philosophy, or a narrative analysis of your experience in an individual course, as well as samples of student work you have graded and Web sites or handouts you have created as instructional tools. Include a list of workshops or seminars on teaching in which you have participated. Keep an updated annotated bibliography of books that you have read to help you improve your teaching skills. Add copies of notes sent by grateful students or colleagues. In short, document your growth and development as a teacher. Be sure that you know what your institution requires, and prepare accordingly.