Glazer, J. L., Greany, T., Duff, M., & Berry, W. (2022). Networked Improvement in the US and England: A New Role for the Middle Tier. In D. J. Peurach, J. Lin Russell, L. Cohen-Vogel, & W. Penuel (Eds.), The Foundational Handbook on Improvement Research in Education (165-187). Rowman & Littlefield