This document summarizes a study on teacher leaders in Sweden. The study followed 35 teacher leaders over five months as they participated in an eight-day education course on teacher leadership. Through self-reports and interviews, the study examined how the teacher leaders described their work leading professional learning communities, how they managed their leadership roles, and what enabled and limited them in their work. Over time, the teacher leaders expressed a desire to develop skills in facilitating discussions and focusing on problem-solving rather than negativity. The study contributes to understanding how teacher leadership roles evolve and the importance of collaboration between teachers, leaders, and principals.