 Other educational institutions include Lincoln University, a small business school catering mainly to international students, and a downtown office of Cal State East Bay.Oaksterdam University, a business college which prepares students for medical cannabis work, is located on 15th Street in an area referred to as "Oaksterdam".The original campus of UC Berkeley was located between Franklin, Harrison, 12th and 14th streets; and the University of California system is currently headquartered in Downtown.