Graham Holdings (formerly the Washington Post Company) is a media and education company. It is focused on education, broadcasting, and print and online news magazines. Its largest segment is education, conducted via Kaplan, which includes tutoring and test preparation services. Other operations include a portfolio of five TV stations and online and print publications such as Slate and Foreign Policy. It spun off cable TV systems operator Cable One in 2015. The company was once best known as the publisher of The Washington Post newspaper. Owned by the family of its chairman Donald Graham for 80 years, the flagship newspaper was sold to Internet mogul Jeff Bezos in 2013.