About the School Bus (S) Test
The School Bus endorsement requires you to hold the Passenger endorsement first, then pass a school-bus knowledge test and a skills test — and most states add their own background check on top. The material is built entirely around protecting children at the most dangerous moments of the route.
Core topics include the danger zones around the bus and proper mirror adjustment, loading and unloading procedures, the rules for railroad crossings, student management, antilock braking, and emergency evacuation. The danger-zone and loading questions carry the most weight because that's where most student injuries happen.
What Test-Takers Miss Most
- 1Danger zones and mirror adjustment — The area around the bus where children disappear from view, and how mirrors must be set to cover it.
- 2Loading and unloading procedures — The exact sequence for a safe stop, counting students across, and confirming the danger zone is clear before moving.
- 3Railroad crossing rules — When to stop, how far back, opening the door and window to listen, and never shifting gears on the tracks.
Choose Your State
Each state's test reflects its own CDL handbook, question count, and passing score. Pick yours to start a free School Bus (S) practice test built for 2026.