He taught political science at Kendall College in Evanston, Illinois in the summer 1971.
Thomas Kerr, president of Kendall College, said the tuition tax could hurt the college's enrollment.
In some ways, he said, his responsibilities at Kendall College have been more like his entrepreneurial roles.
Bertoletti is a graduate of Kendall College in downtown Chicago as a Culinary major.
Kendall College, a Presbyterian school, moved to Tulsa from Muskogee in 1907.
He enrolled in the Kendall College of Art and Design, hoping to become an art teacher.
In 1914, local businessmen urged McBirney to take over as the football coach at Kendall College.
Business programs at Kendall College began in the 1970s.
In 2008, Kendall College was acquired by Laureate Education.
Parkinson graduated from Kendall College of Art and Design in 1980.