“…So far, literature on the cognitive perspective of educational administration has mainly focused on principals' thinking about practical problems and how to solve them, and summarized findings on how expertise is developed and on how novices and experts display their knowledge in a school setting (Hallinger, Leithwood, & Murphy, 1993;Leithwood & Steinbach, 1992Stager & Leithwood, 1989). More recent studies (Wassink, Sleegers, & Imants, 2003;Krüger, Witziers, & Sleegers, 2007) have analyzed the impact of the principals' vision and tacit knowledge on their activities. These activities can play a salient role in shaping the school climate.…”