California Code, Business and Professions Code - BPC § 4989.16

(a) A person appropriately credentialed by the Commission on Teacher Credentialing may perform the functions authorized by that credential in a public school without a license issued under this chapter by the board.

(b) Nothing in this chapter shall be construed to constrict, limit, or withdraw the Medical Practice Act (Chapter 5 (commencing with Section 2000)), the Nursing Practice Act (Chapter 6 (commencing with Section 2700)), the Psychology Licensing Law (Chapter 6.6 (commencing with Section 2900)), the Licensed Marriage and Family Therapist Practice Act (Chapter 13 (commencing with Section 4980)), the Clinical Social Worker Practice Act (Chapter 14 (commencing with Section 4991)), or the Licensed Professional Clinical Counselor Act (Chapter 16 (commencing with Section 4999.10)).