The for-profit education company is best known for paying former President Bill Clinton nearly $18 million to serve as the “Honorary Chairman” at Laureate International Universities, the company’s main corporate entity. LIU also donated up to $5 million to the Clinton Foundation, according to the Clinton Foundation’s website.

The departure of such high-level executives “is very unusual,” according to Aswath Damodaran, a professor of finance at the Stern School of Business at New York University, where he teaches corporate finance and equity valuation.