“…In this context, in schools in which there is a supportive working environment, teacher autonomy is high (Wenner & Campbell, 2016), time and resources are provided to teachers (Chew & Andrews, 2010;York-Barr & Duke, 2004), team leadership opportunities are offered (Gaffney & Faragher, 2010), and the involvement in the decision-making processes is encouraged (Chew & Andrews, 2010). In addition to these, attention is paid to ethics in schools (Beachum & Dentith, 2004;Gordin, 2010;York-Barr & Duke, 2004), the tasks are well-defined (Muijs & Harris, 2006), the quality of communication is increased (Harris & Muijs, 2005), and learning opportunities are created from mistakes (Barth, 2000). Therefore, it can be stated that the school culture that supports teacher leadership has school characteristics that focus on the professional development of the teacher, are sensitive and helpful to the areas led by it, provide autonomy, enable occupational cooperation, and support the active involvement of teachers in decision-making processes.…”