Simpson, R. M. (2020). The Relation between Academic Freedom and Free Speech. Ethics, 130(3), 287–319. https://doi.org/10.1086/707211
Simpson argues that "free speech in universities sometimes undermines academic practices."

“To understand why the picture that equates freedom of speech and academic freedom is misleading, to say the least, you need to go back and think about where academic freedom comes from and what it’s designed to do,” says Robert C. Post, former dean and professor at Yale Law School. (2016)

The marketing firm SimpsonScarborough interviewed college-bound high school students and their parents.

Paper presented at the 2004 annual convention of the American Educational Research Association. Society, Culture, and Change Symposium: "New Challenges to Academic Freedom," April 14, 2004