Delaware School Bus CDL Practice Test

This is a free 20-question practice test for the School Bus portion of the Delaware 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 Delaware Division of Motor Vehicles 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 Delaware.

Question 1 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 2 of 20

A school bus driver should never:

Use a cellphone for non-emergency communication while driving with students aboard
Use turn signals
Use mirrors
Stop at red lights

Correct. Cellphone use while driving a school bus with students aboard is prohibited or sharply restricted in most jurisdictions. Distraction is a leading crash factor.

Question 3 of 20

When a school bus is on a divided highway with a barrier or median:

Some states allow vehicles on the opposite side not to stop when the bus is stopped — verify state law
Always require stop
Always require pass
Are not regulated

Correct. Most states exempt opposing traffic on divided highways with a physical barrier. Some require all traffic to stop. Know your state law.

Question 4 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 5 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 6 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 7 of 20

When students are loading and approaching the bus from across the street:

They should wait for the driver's signal before crossing
Cross immediately
Ignore the lights
Run across

Correct. Crossing students wait for the driver's signal that the road is clear before crossing in front of the bus.

Question 8 of 20

A school bus evacuation is required when:

Fire is on or in the bus, the bus is in danger of fire (downed wires, fuel spill), the bus is on or near tracks, the bus is in path of a train, or the bus is in danger of being hit
Only when the bus is empty
Only at night
Only after a flat tire

Correct. Evacuate for fire, danger of fire, on/near railroad tracks, in path of a train, or danger of being hit by another vehicle.

Question 9 of 20

When evacuating students, they should be moved to a safe area:

At least 100 feet off the roadway in the direction of oncoming traffic, away from the bus
Right next to the bus
Across the road
Anywhere

Correct. Move students at least 100 feet away, off the roadway, in the direction of oncoming traffic so they can see and be seen by approaching drivers.

Question 10 of 20

A school bus must have how many mirrors at minimum?

Standard side mirrors plus crossover mirrors that allow the driver to see the danger zone in front and on the right side
Just one
Just two
None

Correct. School buses have side mirrors plus crossover mirrors at the front so the driver can see the danger zone in front of the bus and on the right.

Question 11 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 12 of 20

When stopped to load or unload students, the bus driver should:

Set parking brake, place transmission in neutral, activate red lights and stop arm, count students, watch mirrors
Just open the door
Only honk the horn
Skip the parking brake

Correct. Standard procedure: parking brake set, neutral, red flashers and stop arm out, count students on/off, mirror check before resuming.

Question 13 of 20

A "post-trip" inspection of the school bus should include:

Walk every aisle, check every seat, check restrooms or rear compartments where applicable
Skip the walk-through
Look only at front
Skip seats

Correct. Post-trip = walk every aisle, check every seat, all compartments. Document on DVIR.

Question 14 of 20

When loading wheelchair students:

Use the lift correctly, secure the wheelchair with 4-point tie-downs, use occupant restraints, ensure the lift is fully stowed before moving
Skip securement
Drive without securing
Use 1 tie-down

Correct. 4-point tie-down for the chair plus occupant lap and shoulder restraints. Verify lift stowed before moving.

Question 15 of 20

School-bus driver disqualifications can include:

Felony involving the use of a CMV, controlled-substance offenses, certain crimes against children — varies by state
None
Only speeding
Only parking violations

Correct. School-bus drivers face additional background-check standards. Convictions can permanently disqualify a driver from the S endorsement.

Question 16 of 20

A school bus must have functioning:

Emergency exits, all signal lights, stop arm, mirrors, fire extinguisher, first-aid kit, body-fluid clean-up kit, reflective triangles
Only the engine
Only seats
Only brakes

Correct. School-bus equipment list is more extensive than other CMVs. All items must be in working order.

Question 17 of 20

When a school bus is involved in a crash:

Render aid as you can, secure the area, notify dispatch and authorities, evacuate students if there is danger of fire or further crash
Continue route
Skip notification
Drive on

Correct. Render aid, secure the area with warning devices, notify dispatch and authorities. Evacuate students if there is danger of fire, fuel spill, downed lines, or secondary crash.

Question 18 of 20

Bullying or fighting on the bus:

Pull off safely if behavior is dangerous, address per district policy, report incidents
Continue route
Encourage peers to intervene physically
Speed up

Correct. Pull off safely if behavior endangers driving. Address verbally and document per district policy. Notify school administration.

Question 19 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 20 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.

About the Delaware 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 Delaware Division of Motor Vehicles 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 Delaware CDL practice tests.