“…The present study builds on the previous studies of states’ and districts’ approaches to professional development and instructional improvement in general (Coburn & Russell, 2008; Firestone, Mangin, Martinez, & Polovsky, 2005; Gamoran et al, 2003; Hightower, Knapp, Marsh, & McLaughlin, 2002; Hubbard, Mehan, & Stein, 2006; Loeb, Miller, & Strunk, 2009; Stein & Coburn, 2008) and explores the state- and district-level policy and organizational conditions that allow a promising international innovation like lesson study to be implemented and scaled up successfully in the U.S. context. Specifically, this mixed-method study takes the first step in understanding state and district approaches to facilitate lesson study by analyzing one state’s and 41 districts’ policy documents produced on lesson study, a statewide district survey of 41 professional development coordinators regarding district-level lesson study policy and facilitation, and interviews with a state education representative and five lesson study training organizers and providers.…”