Hoping to become a trial lawyer, Warren enrolled in the University of California, Berkeley after graduating from high school. He majored in political science and became a member of the La Junta Club, which became the Sigma Phi Society of California while Warren was attending college. Like many other students at Berkeley, Warren was influenced by the Progressive movement, and he was especially affected by Governor Hiram Johnson of California and Senator Robert M. La Follette of Wisconsin. After his third year at Berkeley, Warren entered the school's Department of Jurisprudence, which was later renamed the UC Berkeley School of Law. He received an LLB degree in 1914. As of 2021, Warren is the last Justice of the Supreme Court to have attended law school at a public university. Like his classmates, upon graduation Warren was admitted to the California bar without examination. After graduation, he took a position with the Associated Oil Company in San Francisco. Warren disliked working at the company and was disgusted by the corruption he saw in San Francisco, so he took a position with the Oakland law firm of Robinson and Robinson.