A United States teaching credential is a basic multiple or single subject credential

Credential

A credential is an attestation of qualification, competence, or authority issued to an individual by a third party with a relevant or de facto authority or assumed competence to do so....

 obtained upon completion of a bachelor's degree and prescribed professional education requirements. Teaching credentials are required in the United States in order to qualify to teach public school, as well as many other types of instruction. Requirements vary from state to state. Teachers in California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

 must also pass the California Basic Educational Skills Test.