Previous studies differed largely in their findings concerning the relationship between principal leadership and students' mathematics achievement because of the complexity of principal leadership. As Hallinger and Heck's theoretical framework showed, principal leadership was comprised setting vision/goal, school management, and school climate…

In this study, we examine the relationships between principals' evidence-oriented attitudes and their data use in school leadership practices. Based on theoretical assumptions and existing empirical research, we develop hypotheses on the correlation of evidence-oriented attitudes, epistemological beliefs and principals' data use. We test these…