This special report is the latest installment in an ongoing series about how online education is changing teaching and learning and the development of curricula. It was produced with support from the Bill & Melinda Gates Foundation and the Carnegie Corporation of New York. This paper contains the following articles: (1) Changing the Role of K-12 Teachers (Amanda M. Fairbanks); (2) Video Transforms Teaching Tactics (Ian Quillen); (3) Teaching Students the Skills to Be Savvy Researchers (Leslie Harris O'Hanlon); (4) Evaluating Quality in Digital Reading (Sean Cavanagh); (5) STEM Schools' Digital Push (Katie Ash); (6) English-Learners Going Digital (Michelle R. Davis); and (7) Customized Learning Spaces Widening (Katie Ash).