You may satisfy the subject matter competence requirement for a Single Subject Credential by taking the CSET examination in Social Science.
The examination consists of subtests in three domains: World History and World Geography; US History and US Geography; and Civics, Economics, and California History.
Registration bulletins are available in the CSUB School of Education's Credentials Office.
Please see the links below for additional information on the CSET exam:
http://www.cset.nesinc.com/index.asp
http://www.cset.nesinc.com/CS_testguide_SSopener.asp