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CDL School Bus (S) Endorsement Practice Test

For the School Bus CDL Written Test:

  • How Many Questions:20
  • How Many Correct Answers to Pass:16
  • Passing Score:80%

CDL School Bus (S) Endorsement Practice Test Instructions:

Select number of practice questions:

  • Choose the best answer and receive instant feedback.
  • Click next to go to the next question.
  • Check your results at the end.
  • Start a new version and keep studying!


Each test contains questions based on information in the official CDL handbook for 2024.

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Your Results!

Your Total Score:

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How to Use this Free CDL Written Practice Test

Each free practice test includes 15 multiple-choice questions based on the CDL manual. You can take the test as many times as you want.

Each time you take the test, you will receive a new set of 15 questions. The questions are generated randomly, so you can be sure that you are practicing a wide range of topics.

Before you know it, you will be ready to pass your written test and get your Commercial Learner’s Permit!

Get some more practice with the CDL School Bus Exam Simulation.

What is the CDL School Bus Knowledge Test?

  • Number of Questions: 20
  • Passing Score: 80%
  • Format: Multiple Choice & True/False

The School Bus Knowledge test covers the School Buses section (Section 10) of the Commercial Driver’s License Manual. Topics in this section focus specifically on the transport of school children and include information about:

  • Danger zones around the bus and using mirrors properly.
  • Loading and unloading procedures.
  • Emergency situations.
  • Railroad crossings.
  • Managing student passengers.
  • Antilock brake systems.
  • Special safety considerations for school bus operators.

The School Bus test consists of 20 multiple choice and true/false questions. You’ll need to get a score of at least 80% to pass (16 questions answered correctly).

To prepare for the CDL School Bus written test, you can study the appropriate section in the CDL manual and take our free practice tests.

Who needs to take the School Bus Written Test?

The School Bus Knowledge Test is one of the requirements for any CDL holder who wants to receive the School Bus (S) endorsement.

The CDL School Bus Endorsement also requires you to pass the knowledge test for the Passenger (P) Endorsement.

The School Bus Endorsement will also require you to pass background checks, regular medical examinations, and other additional criteria as mandated by your state and local school districts.

To receive your School Bus (P) Endorsement on your CDL, you’ll also need to pass a skills test in a School Bus Passenger Vehicle.

Many states will require you to pass the School Bus knowledge test periodically so that you can stay up-to-date on current laws regarding school bus operation.