The document outlines 6 stages to implementing portfolio assessment: 1) Identifying teaching goals, 2) Introducing portfolios to students, 3) Specifying portfolio contents, 4) Providing presentation guidelines, 5) Informing stakeholders, and 6) Developing the portfolio with teacher support. It also describes 3 types of portfolios - documentation, process, and showcase - and criteria for assessing portfolios, including thoughtfulness, growth, understanding of processes, and diversity of entries.