Professor Michael Green from UNLV was added to Professor Watchlist for his comments about President Trump.
The website claims to list teachers who "discriminate against conservative students."
Green called Donald Trump a "syphilitic Nazi in the white man's house" in a Facebook post, though he later apologized for his comments.
"I think people should have their own opinions. But no matter what side of the debate you're on, I don't think name calling is necessary or helpful," said Tanis Wright, a student at UNLV.
Green still works as a history professor at the University.