This document discusses the characteristics and benefits of using portfolios as an assessment tool for students and educators. Some key points: - Portfolios involve students, teachers, and parents collaborating over time to select the best examples of a student's work to demonstrate growth and development. - They are child-centered and promote self-assessment skills. Multiple tools and techniques are used. - Portfolios can be used for instructional purposes to improve learning and help students internalize excellence criteria. They can also be used for student-led parent conferences. - Examples of what different subject portfolios may contain are provided, as well as tips for implementing portfolios. The goal is for portfolios to span a period of time