“…Drawing from research on practitioner expertise for ELs, we crafted a sequence of learning centered on recognizing the cultural and linguistic backgrounds, strengths, and needs of students, followed by designing rigorous and responsive environments, assessment, and instruction (Heritage et al, 2015;Lucas et al, 2008;Moll & González, 1997;Nieto et al, 2013;Santos et al, 2012;Valdés et al, 2005). We also tapped into research on effective PD, including the need for sustained, coherent, and challenging content that is reasonable in scope and aligned to practice, as well as time to collaborative, practice, apply, reflect, and receive feedback (Garet, Porter, Desimone, Birman, & Yoon, 2001;Guskey, 1995;Marshall & Smart, 2013;Smylie, Allensworth, Greenberg, Harris, & Luppescu, 2001). For indepth exploration of the LM model, including PD content and design, see Heineke et al, 2018. [Insert Table 1 around here.…”