“…While much research has focused on characteristics of effective professional development (see Garet, Porter, Desimore, Birman, & Yoon, 2001;Guskey, 2003;Luke & McArdle, 2009;Penuel, Fishman, Yamaguchi, & Gallagher, 2007), less is known about the factors and processes that support and promote individual teachers' professional growth during professional development programs (Clarke & Hollingsworth, 2002;Zwart, Wubbels, Bergen, & Bolhuis, 2007). Kennedy (2010) pointed to the need to understand the situational factors that impact on teachers' practices.…”