Many school leaders seek new strategies from their colleagues and education literature on how to develop and sustain a positive school culture where students feel safe and are able to reach their greatest potential in academic achievement. Leadership books focus on strategies of building professional learning communities and developing capacity among school educators. But the literature often leaves out one essential element: the role of the students. At Grafton (MA) High School, the senior leader program is at the heart of building students' leadership capacity. Every year, between 50 and 60 rising seniors participate in the annual senior leader training with great enthusiasm. They are the facilitators of Grafton's freshman advisory program. The success of the freshman advisory program is due to the extensive training that prepares seniors to lead and facilitate freshman advisory programs and helps senior leaders develop a sense of ownership and leadership skills so that they can better express the core values of the school (i.e., respect, responsibility, integrity, and academic excellence). (Contains 1 figure.)