Cal. Educ. Code § 51936

School districts may contract with outside consultants or guest speakers, including those who have developed multilingual curricula or curricula accessible to persons with disabilities, to deliver comprehensive sexual health education and HIV prevention education or to provide training for school district personnel. All outside consultants and guest speakers shall have expertise in comprehensive sexual health education and HIV prevention education and have knowledge of the most recent medically accurate research on the relevant topic or topics covered in their instruction.