Cal. Educ. Code § 17561

Whenever school districts are required to improve and dedicate real property to the centerline of streets or highways adjacent to a schoolsite or forming an intersection at a schoolsite location, and when such street or highway rights-of-way are being conveyed to the city or county or by the city or county to the school district, the requirements of this article shall be deemed satisfied solely by posting a notice of intention to convey in an appropriate location before conveyance.