Strong and stable school leadership is critical for success in schools across the nation. The duties of the principal are many and varied. Principals, for example, can oversee instruction, purchase curricular materials and supplies, and provide professional learning and supports for teachers. Carrying out these duties effectively makes a difference for student achievement and graduation. Principal leadership also impacts teacher satisfaction and teacher turnover. Unfortunately, many schools do not have stable principal leadership. To better understand the phenomenon of principal turnover, the National Association of Secondary School Principals (NASSP) and the Learning Policy Institute (LPI) collaborated on a study. The survey and focus groups asked principals about their intentions to stay in the principalship, as well as the extent to which they experience conditions that research has shown to be related to principal retention and turnover. This report discusses the following findings: (1) Survey and focus group responses reflected national concerns about principal turnover; (2) Working conditions and district supports related to working conditions emerged as major concerns; (3) Principals' compensation and financial obligations were related to their mobility plans; (4) High-stakes accountability systems and evaluation practices can discourage some principals from remaining in their school or position; (5) A lack of decision-making authority was a concern for some principals; and (6) Many principals reported facing obstacles to professional learning opportunities. [For the research brief, see ED606480.]