Many scholarly works have examined school leadership, and many others have studied models for teaching citizenship education. Research combining both school leadership and citizenship education, however, is rare. The leadership of China's school party secretaries (SPSs), who are the equivalent of school principals in the Chinese school system and are particularly responsible for leading and supervising citizenship education and political work on campus, is even less researched. Drawing on data from document analysis and interviews, this empirical study investigates the dynamics and complexities of SPSs' school leadership. The findings reveal a complex division of power and labor between SPSs and principals, as well as the SPSs' struggle to balance state control with their professional autonomy and their power struggles with principals over leadership in citizenship education. The findings also show that, in China, the SPSs' leadership in citizenship education is a form of political leadership that seeks to implement the state's policies and transmit state-prescribed values. In addition, it is conducted in a socio-political context characterized by the integration of administration and politics. Moreover, it involves complex relationships and interactions with higher authorities and principals with diverse interests. Finally, this study presents theoretical implications for understanding school leadership in citizenship education.