Each year, one male student at the school, which trains dancers between the ages of 14 and 18, will be given three years of full tuition.
"The art of ballet has given so much to me personally and professionally, and it is important to develop opportunities for others to enjoy the same experience I have had," Steifel said. "I feel quite strongly about the need to bring more young male talent to the art, and I hope my contribution will help facilitate that goal in some way."
Born in Wisconsin, Stiefel studied at the Milwaukee Ballet School, ABT's School of Classical Ballet, and New York City Ballet's School of American Ballet. He danced with New York City Ballet and Zurich Ballet before joining ABT as a principal dancer in 1997.
The Onassis School was previously known as the Studio Company Associate Program. It was renamed for Onassis, a longtime member of the company's board and its honorary chair, in May 2004.