Jonathan Zimmerman, The Amateur Hour: A History of College Teaching in America (Johns Hopkins Press, 2020). 

The first full-length history of college teaching in the United States from the nineteenth century to the present, this book sheds new light on the ongoing tension between the modern scholarly ideal—scientific, objective, and dispassionate—and the inevitably subjective nature of day-to-day instruction. 

Includes a section on the University of California, Santa Cruz.