25 realistic School Bus practice questions for California CDL applicants. Required for: Drivers operating a school bus. Official test: 20 questions, 16 correct to pass.
Question 1 of 25 · Rail Crossings
What's the safest way to handle a school bus at a railroad crossing?
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A.
Stop within 15-50 feet of nearest rail, look and listen, and turn off any noise-producing equipment
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B.
Speed up to clear quickly
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C.
Stop on the tracks
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D.
Drive across normally
Correct answer: A.
Stop, open windows or door if helpful, listen, and check both directions.
Question 2 of 25 · Operation
What's the role of the driver in student behavior?
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A.
Maintain order and a safe environment
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B.
Ignore students
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C.
Be friends with students
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D.
Enforce school rules only
Correct answer: A.
Maintain a safe environment with calm authority.
Question 3 of 25 · Adverse Conditions
What's the safest way to handle a school bus on icy roads?
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A.
Slow down and increase following distance
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B.
Drive at posted speed
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C.
Use chains where appropriate
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D.
All of the above
Correct answer: D.
Reduced speed, more space, and chains where required minimize ice risk.
Question 4 of 25 · Operation
What's the role of the school bus driver in handling disruptive students?
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A.
Stop in a safe area and address the disturbance, contacting authorities if needed
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B.
Ignore them
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C.
Confront students
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D.
Drive faster
Correct answer: A.
Address disturbances safely; involve school authorities or police as needed.
Question 5 of 25 · Emergencies
What's the role of emergency exits on a school bus?
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A.
To provide alternate evacuation routes in emergencies
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B.
For luggage
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C.
For ventilation
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D.
For maintenance
Correct answer: A.
Emergency exits give children additional ways out in a crash or fire.
Question 6 of 25 · Operation
What's the proper way to handle a student with special needs?
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A.
Provide assistance and ensure their safety
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B.
Refuse to transport
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C.
Treat them like other students without help
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D.
Charge extra
Correct answer: A.
Provide appropriate assistance; safety comes first.
Question 7 of 25 · Following Distance
What's the safest way to handle a school bus in heavy traffic?
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A.
Maintain extra following distance and signal early
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B.
Speed up to keep with traffic
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C.
Drive aggressively
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D.
Use the shoulder
Correct answer: A.
Extra space and clear signals reduce risk in heavy traffic.
Question 8 of 25 · Adverse Conditions
How should drivers handle a school bus in heavy wind?
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A.
Slow down and grip the wheel firmly
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B.
Speed up to clear
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C.
Lock the brakes
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D.
Use engine retarder
Correct answer: A.
Buses are tall and catch wind; slow down and steer firmly.
Question 9 of 25 · Loading
What's the importance of seat belts on a school bus?
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A.
Required in some states; provides additional safety
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B.
Decoration
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C.
Driver use only
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D.
For luggage
Correct answer: A.
Some states require seat belts on school buses for added passenger safety.
Question 10 of 25 · Communication
What's the proper way to communicate with students?
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A.
Clear announcements about safety and rules
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B.
Don't communicate
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C.
Yell at students
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D.
Use only hand signals
Correct answer: A.
Clear and respectful communication keeps students safe and informed.
Question 11 of 25 · Loading
What's the maximum number of standees allowed on a school bus?
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A.
Generally not allowed
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B.
Same as seated passengers
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C.
Always 10
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D.
No limit
Correct answer: A.
Standees are generally not allowed on school buses for safety.
Question 12 of 25 · Loading
What's the maximum number of students that can be in a school bus?
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A.
Determined by the bus's seating capacity
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B.
Always 50
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C.
No limit
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D.
Always 75
Correct answer: A.
Capacity depends on the bus model and seating configuration.
Question 13 of 25 · Adverse Conditions
What's the safest way to handle a school bus during a thunderstorm?
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A.
Pull over to a safe location and wait until the storm passes
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B.
Continue driving
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C.
Drive faster to escape
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D.
Tell students to handle it
Correct answer: A.
Stop in a safe area; resume only when conditions are safe.
Question 14 of 25 · Boarding
When using a wheelchair lift, drivers should:
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A.
Follow proper procedures and ensure the wheelchair is secured
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B.
Use the lift quickly
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C.
Refuse to transport wheelchairs
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D.
Skip securing the wheelchair
Correct answer: A.
Use the lift correctly and secure the wheelchair before moving.
Question 15 of 25 · Inspection
What is "post-trip inspection"?
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A.
An inspection done after the trip ends to identify defects and any students left on board
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B.
A student survey
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C.
A fuel check
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D.
A weekly maintenance
Correct answer: A.
Walk through the bus after every run to find defects and check for students.
Question 16 of 25 · Mirrors
How should drivers handle blind spots?
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A.
Use mirrors and check before moving
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B.
Ignore blind spots
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C.
Drive in the middle lane
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D.
Use only the driver's side mirror
Correct answer: A.
Mirror checks are critical, especially around children entering or exiting.
Question 17 of 25 · Danger Zone
What is the "danger zone" around a school bus?
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A.
10 feet around the bus where children are at risk of being hit
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B.
The driver's seat area
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C.
The aisle
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D.
The cargo area
Correct answer: A.
The danger zone is the 10-foot perimeter where children may not be visible to the driver.
Question 18 of 25 · Loading
When are flashing red lights and stop arm extended?
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A.
When the bus is stopped to load or unload students
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B.
When the bus is moving
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C.
When the bus is parked
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D.
When the engine is off
Correct answer: A.
Lights and stop arm activate during student loading and unloading.
Question 19 of 25 · Emergencies
How should drivers handle a bus breakdown?
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A.
Move to a safe area, set warning devices, and call for help
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B.
Continue driving
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C.
Tell students to walk
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D.
Leave the bus
Correct answer: A.
Pull off safely, set warning triangles, and contact dispatch and emergency services.
Question 20 of 25 · Emergencies
How often should school bus drivers practice evacuation procedures?
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A.
Regularly, as required by state regulations
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B.
Once a year
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C.
Never
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D.
Only when an emergency happens
Correct answer: A.
Most states require regular evacuation drills with students.
Question 21 of 25 · Emergencies
How should drivers handle a school bus emergency?
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A.
Stop in a safe area, evacuate if needed, call for help
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B.
Continue driving
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C.
Tell students to handle it
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D.
Drive faster
Correct answer: A.
Stop, evacuate if needed, and call for emergency assistance.
Question 22 of 25 · Adverse Conditions
What's the safest way to handle a school bus on a wet road?
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A.
Reduce speed and increase following distance
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B.
Drive at posted speed
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C.
Use engine retarder
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D.
Lock the brakes
Correct answer: A.
Slower speeds and more space; engine retarder can cause skids on wet roads.
Question 23 of 25 · Emergencies
How should drivers handle a student becoming ill?
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A.
Stop in a safe area and call for medical help
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B.
Continue to school
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C.
Tell the student to get off
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D.
Ignore the student
Correct answer: A.
Stop safely and contact medical help if needed.
Question 24 of 25 · Adverse Conditions
What's the safest way to handle a school bus in fog?
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A.
Use low beams and slow down
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B.
Use high beams
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C.
Speed up to escape fog
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D.
Stop on the highway
Correct answer: A.
Low beams and slower speeds; high beams reflect off fog.
Question 25 of 25 · Inspection
When must school bus drivers check the brakes?
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A.
Before each trip and at any time the brakes are suspect
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B.
Once a week
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C.
Only at maintenance
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D.
Once a month
Correct answer: A.
Inspect brakes every pre-trip and any time something seems wrong.
About the School Bus Test
The School Bus test covers danger zones and use of mirrors, loading and unloading, emergency exit and evacuation, railroad-highway grade crossings, student management, antilock brake systems, and special safety considerations. School bus drivers must also pass the Passenger Transport test.
The California Department of Motor Vehicles administers this knowledge test as part of its commercial driver license program. To earn the School Bus Endorsement (S) on your California CDL, you need to score at least 16 out of 20 on the official version.
Topics covered on this practice test
- Adverse Conditions: 5 questions
- Emergencies: 5 questions
- Loading: 4 questions
- Operation: 3 questions
- Inspection: 2 questions
- Rail Crossings: 1 question
- Following Distance: 1 question
- Communication: 1 question
- Boarding: 1 question
- Mirrors: 1 question
- Danger Zone: 1 question
How to use this practice test
- Read each question carefully. CDL questions are written precisely — small wording differences matter.
- Click "Show Answers & Explanations" only after answering every question. Don't peek mid-test.
- Read the explanation for every question, even ones you got right. The reasoning is more important than the answer.
- Repeat the test until you score 100%. The questions are deterministic per state, so you can track your improvement over multiple sessions.
- Move on to the other endorsement tests for California until you're ready for the official exam.
Tips specific to the School Bus test
School Bus drivers need both the Passenger and School Bus endorsements. Most school bus questions cover the danger zone, mirror checks, loading and unloading procedures, evacuation, railroad crossings, and student behavior management. Topics like the brake-door interlock and post-trip child-check sweeps appear frequently.