CDL School Bus Practice Test 2026
Free CDL School Bus (S endorsement) practice for the knowledge test β required to drive a school bus. The S endorsement also requires the P passenger endorsement and a skills test in a school bus (not practiced here). Real test is in English; native-language explanations + English-term glossary. ~20 questions on the real test, 80% to pass.
π What to Bring
- β
Existing CDL with (or testing for) the P passenger endorsement
The S endorsement requires the P endorsement.
- β
Proof of identity & required documents
Bring the documents your state DMV lists for the S endorsement.
- β
A school bus for the skills/road test
The S endorsement also requires an in-bus skills test β our bank covers the knowledge test only.
π How to Schedule
- 1
Study Section 10 (School Buses)
Cover danger zones and mirrors, loading and unloading, emergency evacuation, railroad-highway crossings, student management, antilock brakes, and special safety considerations.
- 2
Pass the School Bus knowledge test (in English) at your DMV
About 20 questions, 80% to pass. You must also hold or test for the P passenger endorsement. Fees and scheduling vary by state.
- 3
Pass the school-bus skills/road test
The S endorsement is issued only after you also pass the in-bus skills test (not practiced on this site).
π‘ Test Day Tips
- β’Learn the key English terms even if you study in Chinese/Spanish: danger zone, standee line, stop arm, crossbuck, crossview mirror, tail swing, ABS malfunction lamp.
- β’Master the high-stakes safety facts: loading and unloading is where most student deaths happen β stop the bumper at least 10 feet from students and have crossing students walk in front where you can see them; at railroad crossings stop 15-50 ft from the nearest rail, cross in low gear and never change gears; and NEVER back the bus while students are outside.
- β’Know the evacuation rule: in general keep students on the bus unless staying is more dangerous, but evacuate immediately for fire, a railroad crossing, a possible HazMat spill, an imminent crash, or a shifting bus; lead them to a safe place at least 100 feet off the road.
π Study Handbook
All practice questions are based on the sections below. Click any to read the official source.
π― Practice by Topic
Danger Zones and Use of Mirrors
The danger zone on all sides of the bus where children are in the most danger (up to 30 feet in front, 12 feet to the sides and rear, the first 12 feet in front the most dangerous), and the proper adjustment and use of the outside flat, convex, crossview, and overhead inside mirrors to monitor it and check for students.
Loading and Unloading
The most dangerous time β more students are killed getting on/off the bus than as passengers: approaching the stop, the amber-then-red light sequence and stop arm, stopping the bumper at least 10 feet from students, counting students, the crossing-escort rules (cross 10 feet in front where the driver can see), and the post-trip walk-through for sleeping or hiding children.
Emergency Exit and Evacuation
Deciding when to evacuate (in general keep students on the bus unless there is greater danger; mandatory evacuation for fire, a railroad crossing, shifting position, imminent crash, or a HazMat spill), securing the bus, the safe place (at least 100 feet off the road, upwind of fire, 300 feet upwind of a HazMat spill), and handling possible neck/spine injuries.
Railroad-Highway Crossings
Passive vs active crossings and their signs, the requirement that school buses stop at crossings: stop no closer than 15 feet and no farther than 50 feet from the nearest rail, turn off radios and silence passengers, open the service door and window, look and listen, cross in a low gear without changing gears, and what to do if the bus stalls on the tracks.
Student Management
Managing student behavior safely: concentrate on the driving task, never handle on-bus behavior problems while loading or unloading, pull over to a safe place off the road for a serious problem, speak firmly and respectfully, and never put a student off the bus except at school or their designated stop.
Anti-Lock Braking Systems
Antilock braking systems on school buses: required on air-brake vehicles built on/after March 1, 1998 (and hydraulic-braked vehicles 10,000+ lbs from March 1, 1999); the yellow ABS malfunction lamp; do not pump the brakes in an emergency on an ABS bus; and what ABS does and does NOT do (it helps you keep steering control, not necessarily shorten the stop).
Special Safety Considerations
Other safety items: roof-mounted strobe lights (used when visibility is 500 feet or less due to atmospheric conditions), driving in strong winds, and backing the bus β strongly discouraged, never when students are outside, use a lookout who does not direct the backing, and watch the up-to-3-foot tail swing.
π Official Resources
π New to US road signs? See all road signs and their meanings β
β Frequently asked questions
How many questions are on the CDL School Bus test, and how many do I need to pass?
The CDL School Bus knowledge test has 20 questions. You must answer 16 correctly (80%) to pass.
How many questions can you miss on the CDL School Bus test?
You can miss up to 4 of the 20 questions and still pass.
What should I bring to the CDL School Bus test?
Existing CDL with (or testing for) the P passenger endorsement β The S endorsement requires the P endorsement. Proof of identity & required documents β Bring the documents your state DMV lists for the S endorsement. A school bus for the skills/road test β The S endorsement also requires an in-bus skills test β our bank covers the knowledge test only.
How do I schedule and take the CDL School Bus test?
1. Study Section 10 (School Buses): Cover danger zones and mirrors, loading and unloading, emergency evacuation, railroad-highway crossings, student management, antilock brakes, and special safety considerations. 2. Pass the School Bus knowledge test (in English) at your DMV: About 20 questions, 80% to pass. You must also hold or test for the P passenger endorsement. Fees and scheduling vary by state. 3. Pass the school-bus skills/road test: The S endorsement is issued only after you also pass the in-bus skills test (not practiced on this site).