Which class of driver's license is NOT allowed to operate a school bus?

The Class 6 driver's license is commonly designated for operating standard passenger vehicles and motorcycles. However, it does not authorize the holder to operate a commercial vehicle, which includes a school bus. School buses are classified as commercial vehicles due to their size, capacity, and the specific requirements involved in driving such vehicles safely.

To operate a school bus, a driver must possess a specific commercial driver's license, typically a Class 2 license in many jurisdictions, which includes additional training related to safety, passenger management, and vehicle operation standards pertinent to larger vehicles used for transporting students.

In contrast, the other licenses mentioned, such as Class 1 and Class 2, allow for the operation of larger commercial vehicles, including buses, under the necessary regulations. Class 4 (unrestricted) allows for certain types of commercial driving, but it does not cover the operation of larger buses like school buses. Therefore, a Class 6 license lacks the necessary endorsements for such operations, making it unsuitable for driving a school bus.