Upon completing his studies, Kirk took up an academic position at his alma mater, Michigan State. He resigned in 1959, after having become disenchanted with the rapid growth in student number and emphasis on intercollegiate athletics and technical training at the expense of the traditional liberal arts. Thereafter he referred to Michigan State as "Cow College" or "Behemoth University." He later wrote that academic political scientists and sociologists were "as a breed—dull dogs". Late in life, he taught one semester a year at Hillsdale College, where he was Distinguished Visiting Professor of Humanities.