Donald Trump’s victory in Tuesday’s presidential election provoked intense reactions on many college campuses. Students who supported Democrat Hillary Clinton were stunned, while those who backed the Republican were elated. Some media reports suggested that liberal faculty on left-leaning campuses were coddling grief-stricken students who had voted for Clinton, by scrapping exams and other required assignments in the days after the election. Here, a Yale University economics professor rebuts that notion. — Nick Anderson