This act only applies to architectural and engineering services defined in Government Code Section 4529.10. Nothing contained in this act shall be construed to expand or restrict the authority of governmental entities to contract for fire, ambulance, police, sheriff, probation, corrections or other peace officer services. Nor shall anything in this act be construed to expand or restrict the authority of governmental entities to contract for education services including but not limited to, teaching services, services of classified school personnel and school administrators.