If you are eligible, you can earn a Certificate of Proficiency by passing the California High School Proficiency Examination
(CHSPE). The examination assesses your proficiency in the basic reading, writing, and mathematics skills taught in public schools. If you pass the examination, the California State Board of Education will award you a Certificate of Proficiency, which by state law is equivalent to a high school diploma (although not equivalent to completing all coursework required for regular graduation from high school).
Dropping out of school after registering for the CHSPE or while awaiting results is unlawful for those under 18 years old. It may also result in failing grades for courses in which you are enrolled.