Mafratoğlu, RecepaliAltınay, FahriyeKoç, AhmetDağlı, GökmenAltınay, Zehra2023-04-052023-04-052023Mafratoğlu, R., Altinay, F., Koç, A., Dagli, G., & Altinay, Z. (2023). Developing a School Improvement Scale to Transform Education into being Sustainable and Quality Driven. SAGE Open, 13(1)2158-2440https://doi.org/10.1177/21582440231157584https://hdl.handle.net/11491/8465This research aims to develop a school improvement scale determining the current levels and obtaining data for improvement. The need for a valid and reliable scale in process-oriented school improvement studies makes this research important. Based on a sample of 1,043 teachers in Bursa in 2021, the Kaiser-Meyer-Olkin value was .97; the Bartlett test’s chi-square value was significant. The exploratory factor analysis led the scale to consist of 33 items and 5 factors, explaining 69% of the total variance. The load values of effective leadership, school climate, teacher professional improvement, learning environment, and vision-mission varied between .51 and .98 and in the confirmatory factor analysis, with a different sample group, ?2?=?2.33 and RMSEA?=?.079. Other fit indices showed that the scale has good structural compatibility. Cronbach’s Alpha coefficient showed a high level of internal consistency. Hence, this scale is a valid and reliable tool that can be applied to measure school improvement.enAttribution 4.0 International (CC BY 4.0)info:eu-repo/semantics/openAccessSchool improvementEffective schoolEffective leadershipSchool climateQuality driven educationArticle13110.1177/21582440231157584Q2WOS:000939484400001