Final answer:
School and activity bus drivers usually require a Class C CDL with a school bus endorsement, after going through specialized training and obtaining necessary certifications.
Step-by-step explanation:
Drivers of school and activity buses must have at least a Class C CDL and school bus driver's certificate. The requirements for bus drivers can vary by state, but generally, a specialized training program must be completed, and drivers must obtain a Commercial Driver's License (CDL) with a passenger endorsement, and if they are driving school buses, they need a school bus endorsement.
In most regions, the process involves knowledge and driving tests specifically for bus drivers, a background check, and regular health assessments to ensure the safety of passengers.