Cal. Educ. Code § 48359.5

For a school district of enrollment that is a basic aid district, the apportionment of state funds for any average daily attendance credited pursuant to this article shall be 70 percent of the district revenue limit that would have been apportioned to the school district of residence. Apportionment of these funds shall begin in the second consecutive year of enrollment, and continue annually until the pupil graduates from, or is no longer enrolled in, the school district of enrollment. For purposes of this section, “basic aid school district” means a school district that does not receive an apportionment of state funds pursuant to subdivision (h) of Section 42238 for any fiscal year in which this subdivision may apply.