“…Over the last two decades, international research on professional development has led to an understanding of the factors that contribute to high-quality and effective teacher professional development, which improves teaching and student achievement (Penuel et al, 2007;Pianta et al, 2008;Desimone, 2009;Downer et al, 2009;Higgins and Parsons, 2009;Hill et al, 2013;Knight et al, 2014Knight et al, , 2015Cordingley et al, 2015;Brown and Weber, 2016;De Naeghel et al, 2016;Jukes et al, 2017;Kutaka et al, 2017). This previous research has identified the positive impact that teacher training programs have on in-service teachers' activities.…”