License classes

Bus driver CDL: classes, P and S

CDLP editorial · 5 min read
Published Nov 2, 2026 · Updated Nov 8, 2026

What CDL do you need to drive a bus?

It depends on the bus. A heavy single bus generally needs Class B; a smaller vehicle designed for 16 or more people, including the driver, falls in Class C if it is below the A/B groups. Passenger work needs the P endorsement. A CDL school-bus driver also needs S and must qualify for P, including the required knowledge and skills tests. First-time P/S applicants generally need applicable entry-level driver training. Check state school-bus requirements before you enroll.

Try the free passenger practice test. Study the explanations, then check your state manual.

If this is your situation, start here
Your situation	Start with…
You need to choose a license class	Compare bus groups
You will drive a school bus	Check P and S requirements
You need your first bus course	Plan training and state steps

Ask two questions. Which vehicle group fits the bus? Which passengers will it carry? A school bus, transit bus and shuttle are work descriptions, not universal license classes.

Study with the free passenger practice test; school-bus applicants can add school-bus practice questions. Confirm the required tests with your state. Federal rules checked November 2, 2026.

Bus class and endorsement planning

Common bus configurations — checked November 2, 2026
Bus type / configuration	Class	Endorsement(s)
Heavy single passenger bus, GVWR 26,001 lb or more	B	P; S as well for CDL school-bus operation.
Passenger bus below A/B groups, designed for 16+ including driver	C	P; S as well for CDL school-bus operation.
Smaller shuttle below A/B groups, designed for fewer than 16	No federal CDL solely from passenger count	Check state licensing and other commercial-driver rules.
School bus requiring a CDL	B or C according to the vehicle group	P and S; school-bus skills test in the same group.

Sources: 49 CFR 383.91, 49 CFR 383.93 and 49 CFR 383.123. Design capacity matters, not just how many passengers happen to be aboard. This table assumes single buses. Check unusual truck-trailer combinations separately for the right class.

Class B and Class C describe the vehicle

For a qualifying heavy single vehicle, review the Class B application path. For a passenger vehicle below the heavy groups, review what Class C covers. A higher truck license does not automatically provide the passenger endorsement needed for a bus.

Bring the bus specs to the school and state license office. Ask if the test vehicle fits the bus group and equipment you expect at work. Resolve that before you book hands-on training.

P requires knowledge and driving skills

Under §383.93, the passenger endorsement requires knowledge and skills testing. A written quiz alone does not prove you can drive the bus safely. Check the test vehicle, finished training and permit conditions with the state.

Use the endorsement overview to keep P separate from the CDL class and equipment restrictions. The rights on your state-issued license govern what you may drive.

School-bus applicants need the additional S test

49 CFR 383.123 requires you to qualify for P and show school-bus knowledge. Topics include loading and unloading children, warning devices and mirrors. They also cover emergency evacuation and railroad crossings.

You must take the skills test in a school bus. It must be in the same vehicle group as the bus you will drive. An ordinary passenger-bus test does not replace that requirement. Ask the state which school-bus vehicle and appointment type to arrange. Rule checked November 2, 2026.

Plan ELDT and state requirements before enrollment

Part 380 covers the entry-level training needed for a first P or S. 49 CFR 380.603 describes who is covered and the exceptions; 49 CFR 383.73 requires the state to check training before the required skills test. For a covered first P or S, plan theory and driving instruction with a registered provider. Check which endorsement training it will report.

More about Plan ELDT and state requirements before enrollment

State school-bus requirements can add steps beyond the federal CDL baseline. Use FMCSA’s state agency directory to reach your state license office and check your state’s school-bus process. Before paying, check separate permits, screening, medical or district rules. Ask the office or employer that sets them. A provider may let you enroll. That does not mean you qualify for a job.

Your next-step checklist

I know the intended bus rating and design capacity.
I confirmed the CDL group and P/S endorsement needs.
My provider can report the applicable ELDT.
The school-bus test vehicle matches the group I need.
I checked state and employer requirements separately.

Use this as a planning checklist. Selections stay on this page and are not submitted.

Questions drivers ask

Does Class A automatically let me drive a passenger bus?

You still need the appropriate passenger endorsement and any required school-bus endorsement, without restrictions that prevent the operation.

Do school-bus drivers need both P and S?

A CDL school-bus applicant must qualify for P and meet the additional S knowledge and school-bus skills requirements under §383.123.

Does an empty 16-passenger bus avoid the passenger CDL rule?

The federal small-vehicle group uses the number of people the vehicle is designed to transport, including the driver, instead of the current passenger load.

Is school-bus practice online enough for S?

No. A practice quiz does not replace required training, the state knowledge test or the driving skills test in an appropriate school bus.

Are all school-bus hiring requirements federal?

No. Check the state licensing and school-bus agencies and the employer for requirements beyond the federal CDL baseline.

Put the answers to work.

Use the same questions when you compare your training options.

Find training locations

Sources and scope

Source links, check date and scope

Sources checked Nov 2, 2026. Federal baselines and named state examples are distinguished in the article. Your licensing agency and written program terms govern your case.

Prepared by CDLP editorial from the sources above. No independent instructor, legal or financial review is claimed.