In 1970, longtime professor of mathematics and computer science John George Kemeny became president of Dartmouth. Kemeny oversaw several major changes at the college. Dartmouth, which had been a men's institution, began admitting women as full-time students and undergraduate degree candidates in 1972 amid much controversy. At about the same time, the college adopted its "Dartmouth Plan" of academic scheduling, permitting the student body to increase in size within the existing facilities. In 1988, Dartmouth's alma mater song's lyrics changed from "Men of Dartmouth" to "Dear old Dartmouth".