Cal. HSC § 1337.15

(a) A person who provides instruction or training, at a skilled nursing facility or intermediate care facility or in an educational institution, as part of a certified nurse assistant precertification training program described in Section 1337.1 or 1337.3 may be any licensed vocational nurse or registered nurse with no less than two years of nursing experience, of which no less than one year is in providing care and services to chronically ill or elderly patients in an acute care hospital, skilled nursing facility, intermediate care facility, home care, hospice care, or other long-term care setting.

(b) Notwithstanding any other law, a person described in subdivision (a) shall not be required to hold a teaching credential to provide instruction as part of a certified nurse assistant precertification training program described in Section 1337.1 or 1337.3.