Much has been written during the past decade about the changing role of the principal and the shift in emphasis from manager to instructional leader. Anyone in education, and especially principals themselves, could develop a mental list of responsibilities that fit within each of these realms. But research makes it clear that both those aspects of the job are important. This article will highlight two recent research projects, each with significant findings about principal leadership that provide a nuanced picture of activities that contribute to a principal's effectiveness. In addition, the findings stress the importance of a continuing discussion about principal leadership.