In contemporary nursing practice, leadership roles have changed from administrative manager to one of coach and supporter. Evidence supports the use of transformational leadership as an effective framework for advancing nursing leadership. Transformational leadership involves an appreciation for being dynamic and responsive to complexity and uncertainty; it involves a relationship and the notion of mutuality, having a shared vision, and trust. All of these qualities identified relative to transformational leadership are also embodied within an effective co-teaching collaboration. The purpose of this study was to determine what impact co-teaching in a nurse educator course had on the development of transformational leadership qualities in undergraduate nursing students. We used a mixed-methods approach, including a quantitative leadership development tool and qualitative data in the form of pre- and post-course student interviews. Data were collected from three iterations of a Nurse as Educator course over a two-year period. Findings suggest that students developed transformational leadership qualities through the experience of being co-taught. Three key implications for practices in nursing education are discussed.