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Free S Practice Questions

10 free, exam-style School Bus (S) Endorsement (S) practice questions with answers and explanations. No signup required. Work through them below, then take the full free S practice test to study every exam domain.

Question 1

As a school bus approaches a stop to load students, which lights must the driver activate FIRST?

  1. The alternating flashing red lights
  2. The alternating flashing amber (yellow) warning lights
  3. The roof-mounted white strobe light
  4. The four-way hazard flashers
Show answer & explanation

Correct answer: B - The alternating flashing amber (yellow) warning lights

Question 2

At a railroad-highway grade crossing, a school bus must stop no closer than 15 feet and no farther than how many feet from the nearest rail?

  1. 25 feet
  2. 40 feet
  3. 50 feet
  4. 75 feet
Show answer & explanation

Correct answer: C - 50 feet

Question 3

A driver finishes unloading at a stop and realizes one student who should have gotten off is unaccounted for. What should the driver do FIRST?

  1. Continue the route and report the missing student on arrival at school
  2. Ask the remaining students where the child went
  3. Radio dispatch and wait for further instructions before moving
  4. Secure the bus, take the key, and check around and underneath it
Show answer & explanation

Correct answer: D - Secure the bus, take the key, and check around and underneath it

Question 4

Which situation requires a MANDATORY evacuation of a school bus?

  1. The bus is stalled on a railroad-highway grade crossing
  2. A student becomes verbally disruptive and refuses to sit down
  3. The heating system has failed and the bus is cold
  4. A tire has gone flat on a level shoulder away from traffic
Show answer & explanation

Correct answer: A - The bus is stalled on a railroad-highway grade crossing

Question 5

Which mirrors are used to see the danger zone directly in front of the bus and the area around the service door?

  1. The outside flat side mirrors
  2. The overhead inside rearview mirror
  3. The crossview (crossover) mirrors
  4. The outside convex mirrors
Show answer & explanation

Correct answer: C - The crossview (crossover) mirrors

Question 6

The danger zone in FRONT of a school bus can extend as far as:

  1. 10 feet
  2. 15 feet
  3. 30 feet
  4. 50 feet
Show answer & explanation

Correct answer: C - 30 feet

Question 7

While crossing a set of railroad tracks in a school bus, the driver should:

  1. Shift into a higher gear once the front wheels are over the rails
  2. Not change gears at any point while on the tracks
  3. Downshift on the tracks to keep engine speed up
  4. Stop momentarily on the tracks to confirm the crossing is clear
Show answer & explanation

Correct answer: B - Not change gears at any point while on the tracks

Question 8

What is the PRIMARY benefit of an antilock braking system (ABS) on a school bus?

  1. It shortens the total stopping distance in every road condition
  2. It removes the need to use the parking brake when stopped
  3. It lets you pump the brakes harder during an emergency stop
  4. It helps you keep steering control and prevents skids
Show answer & explanation

Correct answer: D - It helps you keep steering control and prevents skids

Question 9

The rear of a school bus can swing out into an adjacent lane when the driver makes a sharp turn. This 'tail swing' can be as much as:

  1. 3 feet
  2. 6 feet
  3. 10 feet
  4. 12 feet
Show answer & explanation

Correct answer: A - 3 feet

Question 10

A student walking away from the bus after unloading drops a notebook that rolls underneath the front of the bus. The student should:

  1. Quickly reach under the bumper to grab it before the bus moves
  2. Wait by the door until the driver has driven away, then retrieve it
  3. Get the driver's attention and never go after it themselves
  4. Ask another student to crawl under and get it
Show answer & explanation

Correct answer: C - Get the driver's attention and never go after it themselves

What's on the S exam

The School Bus (S) Endorsement (S) exam is organized into 7 knowledge domains. These free practice questions are drawn from across them so you can see where you're strong and where to study:

  1. Danger Zones and Use of Mirrors
  2. Loading and Unloading
  3. Emergency Exits and Evacuation
  4. Railroad-Highway Grade Crossings
  5. Student Management
  6. Antilock Braking Systems
  7. Special Safety Considerations

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