California Code, Education Code - EDC § 46300.7

Notwithstanding any other provision of law, no school district or county office of education shall receive apportionments for any pupil in independent study unless that entity receives written permission from the parent or guardian of the pupil prior to the commencement of independent study by that pupil.  The written permission shall specify the actual dates of participation, the methods of study and evaluation, and the resources to be made available for the independent study program for the pupil.