Final answer:
When the CHP First Aid exam is waived, a bus driver must maintain a valid First Aid certificate for the period that their school bus driver certificate is valid.
Step-by-step explanation:
If the California Highway Patrol (CHP) First Aid exam is waived, the driver must maintain a valid First Aid certificate for the term of their school bus driver certificate. This is a regulation in place to ensure that school bus drivers can provide immediate and adequate first aid should an emergency arise while they are operating a school bus. Details regarding the exact duration of the school bus driver certificate and any related requirements may vary and are typically outlined by the CHP or the department responsible for issuing school bus driver certifications.