This article reports on a study exploring a distributed perspective on school leadership through three head teacher case studies conducted in Scottish primary schools. Drawing from a sequence of in-depth, semi-structured and narrative style interviews conducted with each head teacher, as well as from a semi-structured questionnaire and sociometric analysis conducted with staff, the article analyses the experiences and the perceptions of head teachers. The paper finds that in practice, distributed leadership is more complex and challenging than often represented, challenging five generally held assumptions in the theoretical, policy and practice frames. Implications are drawn for educational leadership at both school and system levels.