California Code, Education Code - EDC § 56195.9

(a) The plan for special education shall be developed and updated cooperatively by a committee of representatives of special and regular teachers and administrators selected by the groups they represent and with participation by parent members of the community advisory committee, or parents selected by the community advisory committee, to ensure adequate and effective participation and communication.

(b) Commencing July 1, 2020, a special education local plan area shall review its local plan at least once every three years and update as needed to ensure information contained within the plan remains relevant and accurate.  This requirement shall not be construed to change the annual budget plan, annual service plan, and annual assurances support plan requirements that are contained in Section 56205.