The Stephen M. Ross School of Business (Ross; formerly known as University of Michigan Business School) is a business school operated by the University of Michigan. It offers bachelor's, master's, and doctoral degrees, as well as an executive education program. Its Bachelor of Business Administration (BBA), Master of Business Administration (MBA), and Executive Education programs have been ranked among the top in the U.S. and the world. Ross also offers dual degrees with other University of Michigan colleges and schools. The Distinguished Leader Certificate is offered by the Executive Education program.