Cal. Ed. Code § 45401
When at least 15 percent of the pupils enrolled in a public school that provides instruction in kindergarten or any of grades 1 through 12 speak a single primary language other than English, the governing board of the school district in which such school is located shall hire a bilingual person for the administrative office of each such school, as soon as a position is available as provided by Section 45403, to serve as a bilingual community liaison person or a paraprofessional, clerical, or other qualified employee of each such school, in accordance with the provisions of Chapter 5 (commencing with Section 45100) of this part, who is fluent in both English and in the primary language spoken by such pupils and their parents or guardians.
Ca. Educ. Code § 45401