Cal. Ed. Code § 52163.5
Each of the program options defined in subdivision (a), (b), (c), (d), (e), or (f) of Section 52163 shall include structured activities which promote the pupil's positive self-image and crosscultural understanding.
The Legislature recognizes that language development is a continuum and that pupils in the same classroom may have varying levels of English and primary language skills. The individualized instruction for each pupil, pursuant to all of the program options, shall be based on a continuing evaluation of the pupil's progress by the classroom teacher, and by others, as appropriate. An English development component is required for all participating pupils. Pupils with greater strength in their primary language shall receive instruction in academic subjects through the primary language as long as such instruction is needed to sustain academic achievement. As pupils develop the skills which allow them to learn more effectively in English, more of their instruction shall be through the English language. A primary language component shall be provided as specified in subdivision (a), (b), (c), (d), (e), or (f) of Section 52163, but shall be less extensive as the pupil progresses into English.
Ca. Educ. Code § 52163.5