The University of California, the nation’s first multicampus system, is unique in its central organizing principle, known as the one-university idea. Its premise is simple: that a large and decentralized system of campuses, which share the same mission but differ in size, interests, aspirations, and stage of development, can nevertheless be governed as a single university. Long regarded as a major structural reason for the UC system’s rise to pre-eminence among public research universities, the one-university model has been a unifying administrative and cultural ethos within UC for...