The American higher education system is extraordinarily diverse, with US colleges and universities varying signifi cantly by historical and legal foundations, size, reputation, values, culture, processes, and programs (Birnbaum 1983 ). As Trow ( 1989 ) summarized, a combination of legal and cultural factors "constituted a kind of license for unrestrained individual and group initiative in the creation of colleges of all sizes, shapes, and creeds" (Cohen and Kisker 2010 ). The unique character of US colleges and universities was also shaped by the distinctive and sometimes competing visions of academic leaders, industrialists, and clergy vying to defi ne the purposes of higher education (Cohen and Kisker 2010 ). Most noteworthy, the German university model emphasizing research and the production of scholars began to supercede the English model adopted by the early colonial colleges. This shift elevated knowledge creation as a salient purpose of higher education in addition to preserving culture (Rudolph 1962 ).The massifi cation of higher education in the USA-which occurred earlier than in other developed countries-and the diversity of the American population also played powerful roles in promoting distinctive organizational identities for colleges and universities. Women's colleges, for example, gained prominence during the progressive era in the early twentieth century, while black colleges were