“…With recent changes that couple teacher evaluation policies with teacher development, principals must both evaluate and support (Neumerski et al, 2018;Woulfin & Rigby, 2017). A principal is unlikely to have the time to both evaluate and support all of their teachers (Neumerski et al, 2018) or have the content expertise across all disciplines to support needed discipline-specific teacher development McNeill et al, 2018;Rigby, Larbi-Cherif, et al, 2017;Steele, Johnson, Otten, Herbel-Eisenmann, & Carver, 2015). Principals may need to rely on more collective approaches to instructional leadership, such as distributing leadership functions to instructional coaches (Woulfin & Rigby, 2017), and facilitating opportunities for teacher collaboration.…”