My favorite textbook is used at the University of Pennsylvania. The student newspaper writes
[Mankiw's] textbook, Principles of Economics, has sold more than one million copies worldwide. It is used in his own class and in Economics 002, Introduction to Macroeconomics, at Penn. The class, taught by Luca Bossi, enrolls about 200 students in the fall semester and 500 in the spring.
Bossi chose the textbook because he believes it is one of the best introductory macroeconomics texts available in the market. He adds that the material is “clearly explained” and does not contain any partisan slants.
“I think the fact that Professor Mankiw has advised and still is advising Republican candidates running for office gives the impression to people that he is a conservative in the way he approaches economics,” he said. However, this “is not reflected in the content of the book.”