Generally speaking, a portfolio is a systematic collection of a variety of student projects or artifacts, collected over time, that reflect a student's developmental progress made in one or more areas. For the class, "Portfolio Development in Reading and Language Arts Courses" (EDUC 508 at Saint Joseph College), the portfolio will demonstrate the student's progress, effort, and achievement with respect to the course objectives and includes evidence of self reflection. Due to the "constructivist" nature of the class, this assignment is to be developed collaboratively by the class. This paper considers some aspects of portfolio development, with topics such as: "What To Include in a Portfolio?"; "Class Assignments/Projects/Activities"; "Considering an Electronic Portfolio"; "How Big Should the Portfolio Be?"; and "Constructing the Portfolio." The paper concludes with a detailed portfolio evaluation rubric. (Contains 19 references.) (NKA)