A driver is adding an S endorsement in Minnesota and already has a CDL but not a Passenger endorsement. Which testing path is most accurate?

1. The driver must qualify for the Passenger endorsement and complete school-bus-specific knowledge and skills requirements
2. The driver may skip Passenger testing because S includes it automatically
3. The driver needs only a school district training certificate
4. The driver needs only a Tank Vehicle endorsement if the bus has a large fuel tank