Alliant International University is a private, non-profit higher education institution based in San Diego, California. It offers programs in six California cities (San Francisco, San Diego, Los Angeles, Irvine, Sacramento and Fresno) and four locations outside the United States (Mexico City, Tokyo, Hong Kong and Singapore). Its enrollment is approximately 5,200 students, of whom 95% are post-graduate. Alliant was formed in 2001 by the combination of two older institutions: the California School of Professional Psychology (CSPP) and United States International University (USIU). Like the institutions that it descended from, Alliant has its home campus in San Diego, California. USIU is the descendant of the original Balboa School of Law founded by Leland Ghent Stanford as a private graduate institution in 1924. The name was changed to Balboa University, and then to California Western University in 1952. Once again, in 1968, the school's name was changed to United States International University. The law school, however, retained the name of California Western School of Law.