“…At the same time, there are significant variations in a range of student achievements across regions and school districts in Norway and in most national systems (Hopkins, Spillane, Jakopovic, & Heaton, 2013;Steffensen, Ekren, Zachrisen, & Kirkebøen, 2017). According to Sigurðardóttir, Sigurðardóttir, and Hansen (2018), it seems fair to assume that the capacity to provide leadership and support varies greatly among municipalities, especially in terms of professional development and improving teaching and learning (Sigurðardóttir et al, 2018, p. 67). This case study aims to investigate how consistently high performing school districts enable schools to develop and improve by shaping learning processes, external collaboration and learning infrastructures (Leithwood & Louis, 2012;Spillane, 2013).…”