Missouri School Bus CDL Practice Test

This is a free 20-question practice test for the School Bus portion of the Missouri Commercial Driver's License knowledge exam. Questions are pulled from a pool of 55 drawn from the AAMVA CDL Manual, which is the source document the Missouri Department of Revenue Driver License Bureau uses to write its actual exam.

How it works: Click an answer. The correct choice highlights in green, and you'll see a short explanation. Aim for 85% or better before you sit for the real test in Missouri.

Question 1 of 20

You see a student running back toward the bus after being unloaded. You should:

Wait until the student is clear, account for them, before moving
Continue moving
Honk and accelerate
Open the door while moving

Correct. Stop and account for the student. Many fatal incidents involve students returning for forgotten items in the danger zone.

Question 2 of 20

A school bus stop in low-light or poor-visibility conditions:

Activate flashers earlier, use additional lights if equipped, allow extra time for traffic to react
Skip flashers
Move quickly
Drive past

Correct. Reduced visibility means earlier flashers, more conspicuous stop, more time for traffic to react.

Question 3 of 20

When students must cross the road to reach or leave the bus, they should:

Cross at least 10 feet in front of the bus, where the driver can see them, only on the driver's signal
Cross behind the bus
Cross at any time
Cross at the rear

Correct. Crossing students walk at least 10 feet ahead of the bus, in clear view, after the driver signals it is safe.

Question 4 of 20

When approaching the bus stop, you should activate the alternating amber warning lights:

About 200 feet in advance (more in 50+ mph zones)
At the stop
After unloading
Only at night

Correct. Activate amber warning lights about 200 feet before the stop (further in higher-speed zones), giving traffic time to slow.

Question 5 of 20

If you must evacuate students through the rear emergency exit:

Have a responsible older student or adult outside to assist others as they exit, maintain orderly evacuation
Throw them out
Skip the rear exit
Only use the front

Correct. Position helpers at exits to assist. Maintain orderly process. Account for all students at the safe area.

Question 6 of 20

When loading students at the stop, the driver should:

Account for every student, watch for late students from nearby houses, count and recount
Just open the door
Skip the count
Move quickly

Correct. Count students before, during, and after loading. Late students may approach in your blind spot.

Question 7 of 20

A student misbehaves on the bus. The driver should:

Pull off safely if needed, address the behavior calmly, never engage physically; report per district policy
Argue back
Speed up
Throw them off

Correct. Pull off safely if behavior is dangerous to driving. Address calmly. Document and report per district policy. Never use physical force except to prevent immediate harm.

Question 8 of 20

When you approach a railroad crossing in a school bus, you must stop:

Between 15 and 50 feet from the nearest rail
On the tracks
100 feet ahead
Anywhere within 200 feet

Correct. Stop 15 to 50 feet from the nearest rail, open door and driver window, look and listen, then proceed without shifting gears.

Question 9 of 20

When stopped at a railroad crossing in a school bus, the driver should:

Open the entrance door and driver window, look and listen for trains
Skip the door
Only honk
Drive across without stopping

Correct. Open door and window, eliminate noise from the bus, look both ways, listen for whistles and bells. Cross only when clear.

Question 10 of 20

A school bus must yield to:

Emergency vehicles with active lights and sirens
No vehicles
Only police
Only fire trucks

Correct. Pull over and yield to all emergency vehicles with active lights and sirens, just as any motorist does.

Question 11 of 20

A school bus driver should never:

Allow students to use the emergency exits as routine entry/exit points
Allow students to be seated
Use the parking brake
Stop at red lights

Correct. Emergency exits are for emergencies. Routine use is unsafe and may damage the door or trigger interlocks.

Question 12 of 20

A school bus with red lights flashing and stop arm extended:

Tells approaching traffic to stop until the bus moves
Allows traffic to pass slowly
Has no meaning
Tells traffic to honk

Correct. Red flashers + stop arm = required stop for approaching traffic in both directions (with the divided-highway exception in some states).

Question 13 of 20

When you change a flat tire en route with students aboard:

Move students to a safe location off the bus and away from the road
Have them stay aboard
Have them help
Have them stand near the tire

Correct. Move students to safety off the road during any tire change or breakdown. Risk of being struck or jack failure.

Question 14 of 20

Pre-trip inspection of a school bus should include:

All standard items plus emergency exits, signaling devices (red and amber lights, stop arm, crossing-control arm), wheelchair lift if equipped, first-aid kit, fire extinguisher, body fluid clean-up kit
Only the engine
Only the brakes
Only the seating

Correct. Standard CMV inspection plus school-bus-specific equipment: lights, stop arm, crossing arm, lift, kits, mirror condition.

Question 15 of 20

The minimum distance the front bumper of a stopped school bus should be from waiting students at the stop:

At least 10 feet
As close as possible
At least 1 foot
At least 50 feet

Correct. Stop with the front bumper at least 10 feet from waiting students so they have to walk forward to enter the bus, ensuring the driver can see them.

Question 16 of 20

When backing a school bus, you should:

Avoid backing whenever possible; if you must back, use a helper, sound the horn, never back across a roadway, never back with students aboard if avoidable
Back at full speed
Back with no warning
Back across roadways

Correct. Backing in a school bus is the highest-risk maneuver. Avoid it. If required, use a helper, sound the horn, do not back across roadways, and ideally do not back with students aboard.

Question 17 of 20

After unloading at the end of the route, the driver must:

Walk through the bus to check for sleeping or hiding students, lost items, damage
Skip the walkthrough
Lock and leave
Only check the front

Correct. Always walk every aisle and check every seat. Sleeping children left aboard a parked bus is a recurring tragedy that the post-trip walk prevents.

Question 18 of 20

The school bus stop arm:

Extends to signal traffic to stop while children load or unload
Is decorative
Is for parking
Is optional

Correct. The stop arm signals approaching traffic to stop. Drivers who pass a stopped school bus with red lights flashing face heavy fines.

Question 19 of 20

When you arrive at a school for unloading, you should:

Stop in the designated unloading area, set parking brake, follow school traffic-control instructions
Stop in the road
Drive into the school yard
Honk to clear traffic

Correct. School unloading is at designated stops with school staff and traffic-control patterns. Follow them.

Question 20 of 20

Student management is important because:

Distracted driving by managing students causes crashes
It does not affect driving
Only the bus matters
Students never affect safety

Correct. Distracted driving from student-management issues is a leading cause of school-bus crashes. Pull off safely to address behavior.

About the Missouri School Bus exam

Most states administer 20 School Bus questions and require 80% to pass. The exam emphasizes loading and unloading procedures, the danger zone around the bus, emergency exit and evacuation procedures, railroad-highway crossings, and student management.

The Missouri Department of Revenue Driver License Bureau follows the federal CDL standards established by FMCSA. To earn the School Bus credential, you must answer at least 80% of the questions correctly. Many candidates score lower the first time because the test pulls from a large pool — refreshing this page will give you a different mix of questions, drawn from the same authoritative source.

Want more practice? Try the full School Bus question bank or browse all Missouri CDL practice tests.