Book excerpt: This study examined the perceptions of teachers regarding the influence of the actions and behaviors of principals that impact school culture, school climate, and teacher self-efficacy. Sixty-five elementary public school teachers of grades kindergarten through fifth grade, across all subject and content areas, participated in this study. Data were collected through the use of online surveys as well as interviews with a limited number of participants. The results suggested the participating teachers agreed that particular aspects of a principal's actions and behaviors have an impact on school culture, school climate, and teacher self-efficacy. Particularly, the results of this study revealed that the aspects of support from the principal, trust among stakeholders, along with mutual respect among all, contribute to a positive school environment. Since this study was focused on three particular public school districts in southeastern Pennsylvania, the perceptions of the participants of this study may not be generalized to all teachers in elementary education. However, the impact of actions and behaviors of principals on school culture, school climate, and teacher self-efficacy was supported by research, which may prove beneficial to current and future educators.