An Empirical Investigation of International Consumer Market Segmentation Decisions They may also be more effective at exerting voice to manage agent behavior, even without the exit option that school choice policies provide (Hirschman, 1970). Finally, student composition may operate as an employment amenity for teachers and administrators, reducing the salaries that the school must pay and increasing the quality of teachers that can be hired for any fixed salary (Antos and Rosen, 1975).
