Mr. Schwarzman committed $100-million to Tsinghua University, in Beijing, to create a program that will bring 200 graduate students a year to live and study on a new campus.
Mr. Robertson gave $50-million to his Robertson Foundation, which supports education, the environment, medical research, and religion and spirituality.
Stephen Ross pledged $200-million to the University of Michigan, where he is leading a $4-billion fundraising campaign.
No. 40: Arthur and Rebecca Samberg
The Sambergs pledged $25-million to Columbia Business School for its new Manhattanville campus.
Dr. Ridgway, who was 92 when he died last year, left $39-million (the bulk of his estate) to endow the University of Evansville.
No. 39: Richard and Susan Rogel
The couple pledged $50.1 million to the University of Michigan at Ann Arbor.
No. 32: Harold Harrison (bequest)
Dr. Harrison left about $66-million to the Medical College of Georgia Foundation at Georgia Regents University.