Transport students safely — danger zones and mirrors, loading and unloading, crossings, student management, and evacuation.
Study material for the S knowledge test. This is not entry-level driver training and no completion is reported to FMCSA.
Read this before you rely on it
The S endorsement has a federal entry-level driver training requirement that includes behind-the-wheel training. We are an online provider and cannot deliver behind-the-wheel training, so this course cannot satisfy the ELDT requirement. Use it to prepare for the written test, and complete your ELDT through a provider that offers both theory and behind-the-wheel.
You also need the P (Passenger) endorsement to drive a school bus.
S.1
Danger zones and mirror use
The danger zone is the area around the bus — roughly ten feet on all sides, worst directly in front and along the right — where students are hardest to see and most at risk. Correctly adjusted flat, convex and crossover mirrors are how you cover it.
How you do it
1Adjust flat, convex and crossover mirrors before the route.
2Scan all mirrors continuously near stops.
3Account for the blind areas close to the bus.
Check yourself
Where are the most dangerous areas around a school bus?
The short version
The danger zone rings the bus — mirrors and constant scanning are how you see students.
S.2
Loading and unloading
Loading and unloading is the most dangerous part of the route — most school-bus fatalities are students struck by their own bus or a passing one. Use a strict procedure: signal, secure the bus, count students, and watch for anyone returning to the bus.
How you do it
1Activate the proper warning lights and secure the bus.
2Load or unload only when it is safe, and count students.
3Watch for students crossing or returning before moving.
Check yourself
Why is loading and unloading the most dangerous part of the trip?
The short version
Most fatalities happen at stops — signal, secure, count, and watch before moving.
S.3
Railroad-highway crossings
School buses stop at railroad crossings within the required distance, open the door and window, look and listen, then cross without shifting. Never stop on the tracks, and do not proceed until you are sure you can clear the crossing completely.
How you do it
1Stop within the required distance before the tracks.
2Open the door and window, look and listen.
3Cross without shifting, and only when you can fully clear it.
Check yourself
What is the school-bus procedure at a railroad crossing?
The short version
Stop, open, look and listen, cross without shifting, and never stop on the tracks.
S.4
Student management
Order on the bus is a safety issue — a fight or a student out of a seat can distract you at the worst moment. Manage behaviour without leaving the driver's seat while moving; if needed, pull over safely to handle a serious problem.
How you do it
1Keep students seated and calm while moving.
2Handle minor issues with your voice, not by leaving the seat.
3Pull over safely for serious problems.
Check yourself
Why is student behaviour a driving-safety issue?
The short version
Disruptions distract the driver — manage behaviour without compromising control.
S.5
Emergency evacuation
Know when and how to evacuate: fire, an unsafe stopping position, or a nearby hazard may require getting students off and far away. Plan for who leads, who helps, and how to account for every student.
How you do it
1Decide whether evacuation is safer than staying.
2Use the safest exits and assign helpers.
3Move students well clear and account for everyone.
Check yourself
Name a situation that requires evacuating the bus.
The short version
Judge stay versus evacuate, use safe exits, and account for every student.
S.6
Security and end-of-route checks
Never leave students unattended, and always do a post-route check of the whole bus so no student is left behind. Security awareness — knowing your route, watching for anything unusual — is part of the job.
How you do it
1Keep students supervised at all times.
2Walk the full bus at the end of every route.
3Report anything unusual or any security concern.
Check yourself
What must you do at the end of every route?
The short version
Supervise students, check the whole bus at route's end, and stay security-aware.
Thresholds, distances and specific rules vary by state and change over time. Confirm everything here against your current state CDL manual before you test.