Cal. Code Regs. tit. 5, § 201
(a) A pupil shall be admitted to the high school shown if he has completed at least the grade indicated.
Admitting
Grade
Completed High School
Grade 6
Junior high school
Grade 8
Four year high school
Grade 9
Senior high school (having grades 10, 11, and 12)
Grade 10
Senior high school (having grades 11 and 12)
The school district maintaining a high school shall admit pupils in accordance with the grade organization of the schools maintained and the maturity and achievement of the pupils as follows:
1. Amendment of subsection (b) filed 9-23-77; effective thirtieth day thereafter (Register 77, No. 39).