California Code, Education Code - EDC § 41370

(a) The governing board of a school district, the governing body of a charter school, and a county board of education shall, except as may otherwise be specifically provided by law, use all money apportioned to the school district, charter school, or county office of education from the State School Fund during any fiscal year exclusively for the support of the school or schools of the school district, charter school, or county office of education for that year.

(b) School districts, charter schools, and county offices of education shall not expend funds provided in satisfaction of the state's minimum funding obligation to school districts and community college districts pursuant to Section 8 of Article XVI of the California Constitution for courses or instruction offered by private or public colleges or universities beyond that permitted in pursuit of a high school diploma, except for courses or instruction in which pupils are enrolled in before July 1, 2020.