CDL School Bus Practice Test Guide: Pass Your S Endorsement in 2025
Driving a school bus isn’t just another driving job—it’s a public trust. School bus drivers are responsible for the safety of our nation’s children, making the role one of the most important in commercial transportation. To ensure drivers are properly trained and tested, the Federal Motor Carrier Safety Administration (FMCSA) requires a special School Bus Endorsement (S) for all commercial drivers who plan to operate a school bus. This guide will walk you through everything you need to know about passing the CDL School Bus Practice Test and earning your S endorsement in 2025.
What Is the CDL S Endorsement?
The School Bus (S) endorsement is added to a CDL to certify a driver to operate a school bus. This endorsement is mandatory for anyone who will be transporting students to and from school or school-related activities.
Why Is the School Bus Endorsement Required?
School buses require special procedures for loading and unloading students, managing student behavior, and ensuring maximum safety during transport. The S endorsement confirms that a driver understands and can implement these procedures.
Who Needs the S Endorsement?
- Public and private school bus drivers
- Childcare center transportation drivers
- Activity or field trip bus drivers
- Church or non-profit school-related vehicle drivers (depending on use)
CDL School Bus Endorsement Test Overview
| Test Format | Number of Questions | Passing Score |
|---|---|---|
| Multiple Choice | 20–25 questions | 80% (typically 16–20 correct) |
This written test must be passed in addition to the Passenger (P) endorsement test. Practical skills testing is also required on an actual school bus.
Topics Covered on the School Bus Test
- Loading and unloading procedures
- Safe stop and signal usage
- Post-trip student check requirements
- Emergency evacuation procedures
- Railroad crossing protocols
- Use of mirrors and danger zone awareness
- Proper student supervision
- Stop arm laws and fines
- School bus vehicle inspections
Sample School Bus Endorsement Questions
- What should you check before loading students at a bus stop?
- How many feet should students stand from the road while waiting?
- What’s the correct way to use the stop arm at a railroad crossing?
- When is it safe to back a school bus with students onboard?
- How do you ensure the bus is empty at the end of a route?
How to Prepare for the School Bus Test
1. Study Section 10 of the CDL Manual
Section 10 specifically covers school bus operations. Study it thoroughly to understand procedures and responsibilities.
2. Take Online Practice Tests
Sites like DMVExamPractice.com provide sample questions in the exact format used by your DMV.
3. Use Flashcards for Key Safety Terms
Flashcards are great for memorizing stop distances, mirror checks, and emergency rules.
4. Enroll in a School Bus Driver Training Program
Many school districts or employers offer pre-licensing training, often including behind-the-wheel practice and safety drills.
Practical Skills Test
In addition to the written test, drivers must demonstrate school bus safety procedures and perform a pre-trip inspection during a skills test with a certified examiner.
Requirements and Fees
- Must hold or apply for a CDL with P and S endorsements
- Be at least 18 (intrastate) or 21 (interstate)
- Pass DOT physical and vision tests
- Complete a criminal background check
- Pay applicable test and endorsement fees (usually $10–$50)
Benefits of the S Endorsement
- In-demand job opportunities with schools and transportation companies
- Stable, family-friendly hours and routes
- Competitive hourly pay with overtime potential
- Retirement and healthcare benefits (for school district roles)
Test-Taking Tips
- Rest well and eat before the test
- Read questions slowly and carefully
- Use logic to eliminate incorrect answers
- Bring the required ID and payment
- Don’t rush—use all available time
Conclusion
The CDL School Bus endorsement isn’t just a license—it’s a commitment to safety and professionalism. With proper preparation using your state’s manual, online resources, and practice tests, you’ll be well on your way to passing the test and serving your community. Whether you’re starting your career or adding endorsements to increase your opportunities, the School Bus Practice Test is a crucial step toward becoming a trusted and responsible commercial driver in 2025.