Given that the study of leadership is interdisciplinary, leadership-related degree programs are often situated within various colleges, schools, and departments across different university campuses (e.g., Schools of Education at some universities, Business Schools at other universities, and Graduate and Professional Schools at still other universities). As such, at the doctoral level leadership related degree programs primarily include: Ph.D., Ed.D., and executive doctoral degrees (depending on the situation of the program within the university). At the masters level leadership related degree programs primarily include: Master of Science, Master of Arts, and executive master's degrees.