In order for a student to be considered a resident of California for tuition purposes, she must have lived in California for at least a year and demonstrate an intent to maintain residence in California. There are no specific documentation requirements, but a student may demonstrate residency with a California driver's license and car registration, California tax returns, a California address on federal returns or a voter's registration card from California.
If you are under 18 years old, then your state of residence will be determined by the residence of your parents. In order to be considered a resident of California, your parent or guardian must meet the qualifications of residency listed above. If the minor is married, he may qualify for residency on his own.
If you are in the military and have been stationed in California, you may qualify for resident tuition even if you do not meet the other requirements.
If you are a teacher or full-time employee at a public college or university in California, this may also qualify you as a resident.