An applicant takes the school bus skills test in a smaller school bus vehicle group than the one they plan to drive. What is the likely licensing issue under federal rules?

1. The S endorsement skills test must be in a school bus of the same vehicle group the applicant will drive
2. Vehicle group never matters for school bus skills testing
3. A smaller bus automatically qualifies the applicant for every larger school bus
4. Only the written test controls vehicle group authority