K-12 schools around the globe are piloting e-portfolio programs that allow students to showcase work, apply real-world skills, and track learning outcomes as they prepare for college and a career. This guide focuses on student-owned e-portfolios in the K-12 setting however, the same principles can be applied to teacher portfolios. Its purpose is to provide an introduction to e-portfolios and to explore how e-portfolios can be used throughout K-12 education.