Published by the International Association for K-12 Online Learning (iNACOL), "Blending Learning: The Evolution of Online and Face-to-Face Education from 2008-2015" profiles seven schools and districts currently integrating blended learning into classrooms. Profiled schools and districts (from Michigan, New York, Nevada, Pennsylvannia and Washington State) use a variety of set-ups including "flex model" (on campus online learning with varied teacher involvement) and "rotational model" (students rotate between teacher mediated face-to-face learning and computer-based learning). Lessons learned include the need to identify barriers and obstacles to the implementation of blended learning, as well as goals and benefits of blended learning for students and teachers. Also relevant is the development of a school culture and climate focused on continuous improvement, as well as the assessment of current professional development and training.
Powell, A., Watson, J., Staley, P., Patrick, S., Horn, M., Fetzer, L., ... & Verma, S. (2015). Blending Learning: The Evolution of Online and Face-to-Face Education from 2008-2015. Promising Practices in Blended and Online Learning Series. International association for K-12 online learning.