The document discusses portfolios as a way to collect student work over time to show growth. Portfolios can include various types of student work and media. They have pros like allowing students to reflect on growth, but scoring them reliably can be difficult. Portfolios can be used to showcase student work and interests, or demonstrate growth with self-assessment. Teachers should establish a clear vision and intended audience for portfolios. They should also determine what types of student work and context will be included, and create examples to help students understand the portfolio process.