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The school bus endorsement applies to applicants who wish to drive a school bus in any Class A or B CDL. To add an S endorsement to your CLP/CDL, you must pass the Wisconsin school bus test, and you must also pass skills tests in a school bus. The WI CDL bus test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The knowledge test covers the following sections of the Wisconsin CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this WI CDL practice test to prepare for the actual bus test!
1. To know if your vehicle is equipped with ABS, look for:
the ABS shipping paper.
the ABS logo on the steering wheel.
a yellow ABS malfunction lamps on the instrument panel.
an ABS placard.
2. When inspecting the vehicle, make sure that:
all emergency exits are not damaged.
if equipped, the stop arm is mounted  securely  to  the  frame  of  the  vehicle.
all internal and external mirrors and mirror brackets are not damaged.
All of the above.
3. After stopping, you should:
Activate the alternating amber lights and ensure the stop arm is extended.
Have the students board the school bus as quickly as possible.
Activate the alternating red lights and ensure the stop arm is extended.
Turn on the right turn signal indicator.
4. During an emergency student safety is generally best maintained by:
leading students as far away from the bus as possible.
leading students downwind of the bus if fire is present.
having the students stand at least 50 feet off the road in the direction of oncoming traffic.
keeping students on the bus.
5. When loading or unloading passengers, put the transmission:
second gear.
in reverse.
in first gear.
in Neutral.
6. When you are driving a school bus, the emergency exit doors or windows must always:
have a red door light turned on.
stay open.
be closed.
None of the above.
7. Before crossing railroad tracks you should:
stop no closer than 100 feet from the nearest rail.
stay to the left of the roadway if possible.
open the service door and driver's window to look and listen for approaching trains.
place the transmission in first gear.
8. If you recognize a distracted driver on the road, you should:
flash your brake lights at them.
try to pass them.
follow them closely.
give them plenty of room.
9. Walkers, joggers, and bicyclists wearing headsets:
may not hear you.
can usually hear the sounds of traffic.
are usually aware of what is happening around them.
can always see you.
10. When approaching an emergency vehicle stopped on the side of the road with lights flashing, you should:
yielding the right-of-way by coming to a complete stop.
move to the lane not next to that of the emergency vehicle.
speed up.
stay in the right lane.
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WI CDL School Bus Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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