Skip to main content
Hero background

CDL School Bus Endorsement S Practice Test

Pass the CDL School Bus Endorsement Test on your very first try! Take our FREE Practice Test for the ultimate test preparation. Our practice tests have 25 multiple choice questions straight from the handbook and give immediate feedback.
Questions number
Mistakes Allowed
Passing Score

School Bus Endorsement Test: What You Need to Know

According to federal regulation, a school bus endorsement, or S-endorsement, is needed for anyone who operates a school bus with passengers. Mechanics who may need to drive an empty bus from time to time are exempt. To earn this endorsement, you need to pass the school bus endorsement test. Here's what you need to know about the School Bus Endorsement Test.

What's On the Test

Below are the topics that are covered in the written tests. Many school bus practice tests cover these topics, so using these tests to prepare should be helpful, and will increase your chances of passing on the first try. Here's what's tested:

  • Loading and unloading children, including the safe operation of stop signal devices, external mirror systems, flashing lights, and other warning and passenger safety devices.
  • Emergency exits and procedures for safely evacuating passengers in an emergency.
  • State and Federal laws and regulations related to safely traversing highway rail grade crossings.

Who Needs the Test

Obviously, this test is for anyone who operates a school bus (with passengers) when on the job.This would include public and private school employees transporting students from home to school, school to home, and school-sponsored events. A school bus permit is no longer enough. Therefore, the endorsement is required for most school bus drivers. It is recommended that those who need the endorsement prepare for the best with school bus practice tests.

What You Need for the Test

First, you need to have a commercial driver's license. You can't apply for the S-endorsement and the commercial driver's license at the same time since the school bus endorsement has a skill test of its own. You need to have the commercial license first. Some states may require a background check prior to giving the endorsement.

Earning the S-endorsement is much more than passing the test. There is also a skills, or road test, that needs to be passed as well. The definition of 'school bus' actually differs from state to state, so it's best to check with your employer whether or not you need the endorsement and/or the specific vehicles that you'll need to learn how to operate.

CDL Sample Test Questions

A safe place to evacuate students will generally be at least 100 ft. off the road except when ________.
  • There is never an instance when a safe area is 100 ft. away from the road.
  • The bus is on fire.
  • You are stuck on the railroad tracks.
  • There is a risk of spilled hazardous materials.
Buses may carry what types of hazardous materials?
  • Small-arms ammunition labeled ORM-D.
  • Emergency hospital supplies.
  • Certain drugs.
  • All of the listed answers.
For your pre-trip vehicle inspection test, your entry doors should be in what condition?
  • All of the listed answers.
  • Your entry doors should be undamaged.
  • Entry doors should operate smoothly from the outside.
  • Entry doors should be in working condition.
If the school bus stalls on a railroad-highway crossing, you should lead students ___________.
  • Very near the railroad tracks.
  • In the opposite direction of an oncoming train.
  • In the direction of any oncoming train but off the railroad tracks.
  • None of the listed answers.
If there is a risk from spilled hazardous materials, you should lead students how many ft. upwind of the bus?
  • 100 ft.
  • 300 ft.
  • 200 ft.
  • 50 ft.


A Roundabout

Roundabouts, Traffic Circles, and Rotaries: Navigating the Differences

In the world of roadways and intersections, the terms "roundabout," "tra

Roundabouts, Traffic Circles, and Rotaries: Navigating the Differences

Mastering the Roundabout: A Guide to Efficient and Safe Navigation

Roundabouts, those circular intersections that have become increas

Mastering the Roundabout: A Guide to Efficient and Safe Navigation
9 and 3 Steering Wheel Hand Postion

The Evolution of Steering Wheel Hand Positions: Safety First!

Driving is an essential skill that many of us acquire at a young age.

The Evolution of Steering Wheel Hand Positions: Safety First!