Book excerpt: "The Handbook of Research on K-12 Online and Blended Learning is an edited collection of chapters that sets out to present the current state of research in K-12 online and blended learning. The beginning chapters lay the groundwork of the historical, international, and political landscape as well as present the scope of research methodologies used. Subsequent sections share a synthesis of theoretical and empirical work describing where we have been, what we currently know, and where we hope to go with research in the areas of learning and learners, content domains, teaching, the role of the other, and technological innovations."--Book home page.