...Abdurrahman İlğan; Aylin Kirişçi Sarıkaya; Servet Üztemur Purpose This study aims to examine the relationships among teachers' participation in professional development (PD), total weekly working hours, peer collaboration (PC), stakeholder feedback, and principal leadership (PL) across three non...

...), the investigation of the effects of tenure on school leaders is relatively limited, mostly focusing on the relation between school leaders’ turnover, teacher retention and student achievements (Béteille et al., 2012). Although some findings suggest that leadership turnover improves organizational...