California Code, Education Code - EDC § 32243

(a) When a school subject to this article has been determined to have significant risk factors for lead, the school shall be advised of this finding, and the school shall notify parents of the provisions of the Childhood Lead Poisoning Prevention Act of 1991 (pursuant to Chapter 5 (commencing with Section 105275) of Part 5 of Division 103 of the Health and Safety Code). Within 45 days of receiving this finding, the school principal or the director of the schoolsite shall notify the teachers, other personnel, and the parents of the finding.

(b) Subsequent to the implementation by the state of a certification and training program for environmental lead testing and abatement, any school that undertakes any action to abate existing risk factors for lead shall utilize trained and state certified contractors, inspectors, and workers.