“…Sahlberg, 2011). However, there is a need for seeking ways to promote in-service teachers' professional development and identity from induction to retirement (Heikkinen, Jokinen, & Tynjälä, 2012;Kallioniemi, Toom, & Niemi, 2012;Martin & Pennanen, 2015). Although there is a global concern for teachers leaving their jobs after a few years of working in schools (OECD, 2005), teachers' professional mobility rates are low in Finland.…”