Commencing July 1, 1993, no school district may receive school district apportionments pursuant to Section 42238 for independent study by pupils 21 years of age or older or by pupils 19 years of age or older who have not been continuously enrolled in kindergarten or any of grades 1 to 12, inclusive, since their 18th birthday.
Source:
Section 46300.1, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=EDC§ionNum=46300.1..