Study student safety, railroad crossing rules, loading procedures, and emergency evacuation with simple guides and realistic practice questions.
The School Bus endorsement (S endorsement) is required when you operate a school bus designed to carry students. The written exam covers student safety, railroad crossings, loading zones, and emergency evacuation.
PrepCDL helps you understand the special responsibilities of school bus drivers and practice the questions you will see on test day.

Practice the school bus endorsement and the tests you need before earning your School Bus qualification.
20 practice questions
Prepare for school bus rules, student safety, railroad crossings, loading procedures, and emergency evacuation.
20 practice questions
School bus drivers need the Passenger endorsement first. Study bus safety, emergency exits, and passenger operating rules.
50 practice questions
Study safe driving, vehicle inspections, basic control, shifting, road signs, cargo safety, and the rules every CDL driver must know.
Try a sample question from our school bus practice test and see how PrepCDL explains the topics you need to pass.
How far does the school bus danger zone extend around the bus?
Everything you need to study smarter, practice faster, and walk into your CDL exam prepared.
Practice with exam-style questions covering CDL rules, safety, inspections, endorsements, and real test topics.
Study material tailored to your state’s CDL manual so you focus on the rules that matter for your test.
Build confidence with practice tests, randomized questions, progress tracking, and detailed answer explanations.
Pick your state for practice tests and study guides aligned with your local CDL exam.
All states
Most states include around 20 questions on the school bus written test. You typically need to score at least 80% to pass. PrepCDL includes 20 practice questions to match the exam format.
Yes. School bus drivers must hold both the Passenger and School Bus endorsements. The passenger endorsement is a prerequisite in most states.
Beyond passing the written tests, school bus drivers often need background checks, medical certifications, and sometimes additional training or behind-the-wheel evaluations required by the school district or state.
It depends on the vehicle size. Many school buses require a Class B CDL because of their weight. Smaller school vehicles may qualify for Class C. Check your state's requirements for the specific bus you will operate.
School bus drivers play a critical role in student safety. Start practicing today and build the knowledge you need to pass your endorsement exam.
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