“…Third, most studies of PLCs acknowledge the importance of stimulating and participative leadership as a key dimension that is part of the organizational capacity that fosters PLCs. This dimension refers to the degree to which school and departmental leaders support and stimulate teacher learning, delegate responsibilities, and share leadership functions (Geijsel, Sleegers, Stoel, & Krüger, 2009;Geijsel, Sleegers, Van den Berg, & Kelchtermans, 2001;Mitchell & Sackney, 2000;Moolenaar, Daly, & Sleegers, 2010;Mulford et al, 2004;Spillane, 2006;Spillane & Kim, 2012;Visscher & Witziers, 2004). Together, the three capacities (personal, interpersonal, and organizational) and their eight underlying dimensions form a conceptual model of PLCs that we will use to test the multidimensional, multilevel nature of PLCs within Dutch elementary schools.…”