“…The empirical research base on the effectiveness of PD in directly enhancing student learning and performance is mixed (Desimone & Garet, 2015;Kennedy, 2016). Several studies indicate positive effects of PD participation on student performance in science contexts (e.g., Doppelt et al, 2009;Fishman et al, 2013;Frumin et al, 2018;Lee, Deaktor, Enders, & Lambert, 2008;Llosa et al, 2016;Price & Chiu, 2018;Roth et al, 2011;Schuchardt, Tekkumru-Kisa, Schunn, Stein, & Reynolds, 2017), especially if PD activities have a content focus, model teaching, and/or include active learning components (Gersten, Dimino, Jayanthi, Kim, & Santoro, 2010;Penuel, Gallagher, & Moorthy, 2011). However, other studies were not able to detect positive effects of PD participation on student achievement, even if PD activities are aligned to the high-quality PD design characteristics (Garet et al, 2008(Garet et al, , 2011Jacob & McGovern, 2015).…”