“…These sample issues may have influenced our findings. In addition, this study focused solely on school-based, within-school PLCs, while many elementary schools are now exploring ways to engage in PLC initiatives that cross school boundaries and build communities of teachers between, rather than within, schools (e.g., Katz & Earl, 2010;Muijs, West, & Ainscow, 2010). In order to strengthen the validity of our conceptual model, research into the multidimensional, multilevel nature of the concept of PLCs in a variety of settings (i.e., secondary education departments, vocational education, etc.)…”