“…The most notable finding with respect to other topical foci was the scarcity of topics for which there was a concentration of studies. Indeed, the only other topics with more than five studies were “school effectiveness and improvement” (e.g., Bellei et al, 2016; Burgess and Dixon, 2012; Cervini, 2009; Elacqua et al, 2011; Martinez-Abad and Chaparro Caso López, 2017; Troncoso et al, 2016; Valenzuela et al, 2016; Willms and Somer, 2001), ‘principals’ (Ahumada et al, 2016; Borden, 2011; Cuadros et al, 2016; Cuellar and Giles, 2012; Galdames et al, 2017; Santizo Rodall and Ortega Salazar, 2017; Slater et al, 2008; Weinsten and Muñoz, 2014), and ‘education reform and change’ (Elacqua et al, 2016; Greybeck et al, 2004; Montemayor et al, 2008; Schiefelbein and Schiefelbein, 2000; Vicente, 2016).…”