“…Concomitantly, interest has grown in mapping and typologising its knowledge base, its methodological and conceptual approaches and, increasingly, knowledge-production locations (Erickson, 1979; Gunter, 2016; Gunter and Ribbins, 2002; Hallinger, 2020; Heck and Hallinger, 2005; Murphy et al, 2007; Oplatka, 2009; Ribbins and Gunter, 2002; Thomson, 2017). Systematic and bibliometric reviews have increased as researchers attempt to codify knowledge production in the field using techniques to assess volume, growth trajectory, geographic distribution, citation and co-citation practices, thematic foci, epistemological positioning and theory use (for example, see Castillo and Hallinger, 2018; Gumus et al, 2018; Hallinger, 2011, 2020; Hallinger and Chen, 2015; Hallinger and Kovačević, 2019, 2021; Oplatka and Arar, 2017; Walker and Hallinger, 2015). In this article, we contribute to this literature through our mapping of knowledge-production traditions, trends and trajectories.…”