This scoping review explores the role of school leadership in the improvement of teacher well-being by utilizing the Locus of Control (LOC) Framework identified by psychologist Julian Rotter in 1954. The internal and external environments impacting teacher well-being were explored, and the specific responsibilities of school leadership were identified. The literature reports that while teachers are responsible for many aspects of their well-being, school leaders can improve a teacher's mental health and create a positive school culture by taking responsibility for factors external to the teacher's LOC. This paper outlines school leadership responsibilities in actively implementing strategies to improve staff well-being in the school environment.