The purpose of "So You Have to Have a Portfolio: A Teacher's Guide to Preparation and Presentation" is to offer universities, colleges, professors, teachers, applicants for National Certification and students a book for a practical approach for portfolio preparation. The book may be used for individualized professional development, in teacher assessment for tenure and advancement, and in teacher preparation courses. Disciplinary fields to help those who have to present a portfolio to know both the theory and good practices for individual fields of study may also easily adapt it.The authors have defined a portfolio, given the theoretical base for the various kinds of portfolios, and shown how to collect data for an appropriate portfolio presentation. This theoretical and definitional material is contained in the first four chapters of the book with an acronym the authors have coined CORP: collection, organization, reflection, and presentation. These chapters deal with the importance of using creativity in the collection, organization, reflection, and presentation of the assessment portfolio. They offer several tools for each of the processes and compare the portfolio process approach with the other disciplinary processes.