Book excerpt: This qualitative study investigated teachers' perceptions regarding the principal's role in establishing a positive environment, enhancing the instructional process, and empowering teachers to become leaders. Participants from one public high school in southeastern Pennsylvania completed the researcher-developed online survey and participated in face-to-face interviews. Results of this study indicated that participants noted the importance of the principal in establishing a culture that fostered student achievement. Results of this study also pointed to the overall school environment as a critical component in establishing a culture for student success and teacher leadership capacity. Participants in this study often referenced the important part the principal plays in establishing the framework for teacher professional growth and teacher collaboration. These findings may provide direction for high school principals and future principals in understanding the impact principals do have in creating a positive school environment.