Thereafter, Swamy moved to the Indian Institute of Technology, Delhi where he was a full Professor of Mathematical Economics there from 1969 to the early 1970s. He was removed from the position by its board of governors in the early 1970s but was legally reinstated in the late 1990s by the Supreme Court of India. He continued in the position until 1991 when he resigned to become a cabinet minister. He served on the Board of Governors of the IIT, Delhi (1977–80) and on the Council of IITs (1980–82). He also taught economics courses at Harvard Summer School until 2011, when the Harvard faculty voted to eliminate Swamy's courses as a result of his "offensive" statements about Muslims.