Köse E.K.2020-06-252020-06-252019Köse, E. K. (2019). Development and Psychometric Properties of Teacher Classroom Leadership Scale (TCLS). Kuram ve Uygulamada Eğitim Yönetimi, 25(1), 139 - 168.13004832https://doi.org/10.14527/kuey.2019.004https://hdl.handle.net/20.500.12587/2644The purpose of the present study was to develop a reliable and valid scale that assesses teachers’ classroom leadership. Based on interviews with students and teachers and a review of literature, scale items were created for teachers’ roles and responsibilities in leading students. Two independent samples participated in the study: 407 high school students during item generation and 594 high school students during scale validation. A principal component analysis revealed that the scale’s 25 items contained four factors (i.e., interaction, motivation, in-class processes, and out-of-school processes) and explained over 54% of the total variability. Confirmatory factor analyses indicated acceptable fit and reliability coefficients were also found to be acceptable. It was concluded that the TCLS is a valid and reliable instrument in assessing teachers’ classroom leadership. © 2019, Pegem Akademi Yayıncılık Egitim Danısmanlik Hizmetleri Ticaret A.S.. All rights reserved.eninfo:eu-repo/semantics/openAccessClassroom LeadershipScale DevelopmentTeacher LeadershipArticle25113916810.14527/kuey.2019.0042-s2.0-85078343964N/A338521