“…"Crabs in a bucket" phenomenon, which was first described in educational organizations by Duke (1994), was seen as one of the most important obstacles to the professional development of teachers as educational leaders, and was conceptualized and introduced into the literature (Duke, 1994;Hard & O'Gorman, 2007). However, together with the fact that the number of scientific studies in the literature on "crabs in a bucket" phenomenon was quite few (Aydın & Oğuzhan, 2019;Duke, 2014;Kumar & Soubhari, 2014;Marques, 2019;Miller, 2019;Sampath, 1997;Spacey, 2015), no measurement tool could be found to evaluate this phenomenon from the perspectives of teachers working in educational organizations. From this point of view, in this study, it was aimed to develop "Crabs in a Bucket Scale at Schools".…”