You need a commercial driver's license with a school bus endorsement

A regular driver's license does not let you drive a school bus, even if you have a clean record and years of driving experience. You must obtain a commercial driver's license (CDL) and add a school bus endorsement to it. The endorsement is sometimes called the "S" endorsement because it appears as an "S" on your license. Without it, you cannot legally operate a school bus, regardless of whether students are on board.

The school bus endorsement exists because driving a bus carrying children involves different skills and knowledge than driving a personal vehicle. You will need to pass written tests, a skills test, and a medical examination. The process takes several weeks to a few months, depending on how quickly you schedule your tests and how your state processes applications.

Key Takeaways

  • You must hold a CDL with a school bus endorsement; a standard driver's license is not sufficient under any circumstance.
  • The process requires passing a written knowledge test, a skills driving test, and a Department of Transportation medical exam.
  • Most states require you to hold a CDL for at least 14 days before you can take the school bus endorsement test.
  • Background checks and fingerprinting are part of the process because you will be transporting minors.
  • Once you have the endorsement, you must renew it along with your CDL, usually every four to eight years depending on your state.

Getting your commercial driver's license first

Before you can add a school bus endorsement, you must first obtain a CDL. This is a separate license from your regular driver's license and requires its own process and testing process. You will go to your state's Department of Motor Vehicles (or equivalent agency) and request a CDL process. Some states let you explore for the CDL and school bus endorsement at the same time; others require you to hold the CDL for a waiting period (often 14 days) before you can test for the endorsement.

To get a CDL, you will need to pass a written knowledge test covering vehicle operation, safety, and cargo handling. You will also need to pass a practical driving test in a commercial vehicle. The written test covers topics like braking systems, weight distribution, and how to handle emergencies. The driving test is conducted by a state examiner and lasts about 30 to 45 minutes; you drive the examiner's vehicle or a school bus provided by your employer or a testing facility.

The school bus endorsement tests and requirements

Once you have your CDL, you take a separate written test for the school bus endorsement. This test focuses on student safety, loading and unloading procedures, emergency equipment, and how to handle behavioral issues on the bus. The test typically has 20 to 30 questions and covers topics like proper use of mirrors, how to find wheelchairs, and what to do if a student is injured. You must pass with a score of 80 percent or higher on most state tests.

You will also take a skills test specific to the school bus endorsement. This test includes a pre-trip inspection (walking around the bus and checking lights, brakes, mirrors, and emergency equipment), a basic control test (backing up, turning, and parking), and an on-road test where you demonstrate safe driving with an examiner on board. The examiner watches how you use mirrors, communicate with students, and handle turns and stops.

A Department of Transportation (DOT) medical examination is required for all CDL holders, including those with a school bus endorsement. You must visit a certified medical examiner (not your regular doctor) who will check your vision, hearing, blood pressure, and overall health. The examiner will complete a form called the Medical Examination Report, which you submit with your CDL process. If you have certain medical conditions—such as uncontrolled diabetes, heart disease, or sleep apnea—you may be disqualified or require special certification.

Background checks and fingerprinting

Because you will be transporting minors, your state will conduct a background check before issuing the school bus endorsement. This check looks for criminal convictions, particularly those involving violence, drugs, or crimes against children. You will be fingerprinted, and your prints are checked against state and federal databases. Some states also check your driving record for serious violations like DUIs or reckless driving.

You may also be required to complete a Transportation Security Administration (TSA) background check if your school district receives federal funding. This is a separate process from the state background check and can take additional time. If you have a disqualifying offense on your record, you will not be issued the endorsement, even if you pass all the tests.

What documents you will need to bring

When you explore for a CDL and school bus endorsement, bring your current driver's license, proof of residency (a utility bill or lease), proof of citizenship or legal residency (a passport or birth certificate), and your Social Security number. You will also need to bring the completed CDL process form, which your state's DMV provides online or in person.

For the DOT medical examination, bring your insurance information and a list of any medications you take. The medical examiner will ask about your health history, so having that information ready speeds up the process. If you have had previous medical exams or certifications, bring those documents as well.

Timeline and costs

The entire process—from explore for a CDL to receiving your school bus endorsement—typically takes 4 to 12 weeks. The written tests can usually be scheduled within a week or two of your process. The driving test may have a longer wait depending on how many examiners your state has and how busy they are. The DOT medical exam can be scheduled quickly, often within a few days.

Costs vary by state but generally range from $100 to $300 for the CDL process and testing fees, plus $50 to $150 for the DOT medical examination. Some school districts pay for these costs as part of hiring, while others require you to pay upfront and reimburse you after you are hired. Ask your potential employer about their policy before you begin the process.

Renewing your school bus endorsement

Your school bus endorsement expires when your CDL expires. Most states issue CDLs that are valid for four, five, or eight years, depending on your age and whether you are a hazmat driver. When your CDL is about to expire, you renew it at your state's DMV. You will need to pass the school bus endorsement written test again, though some states waive the skills test if you have held the endorsement continuously without violations.

You will also need a new DOT medical examination before you renew. Schedule this exam at least 60 days before your CDL expires so there is time to process the paperwork. If your medical exam shows a disqualifying condition that has developed since your last endorsement, you may lose the endorsement even if you pass the written test.

Frequently Asked Questions

Can I drive a school bus with just a regular driver's license?

No. Driving a school bus without a CDL and school bus endorsement is illegal, even if no students are on board. You can face fines, criminal charges, and civil liability if you are in an accident. Your insurance will not cover you either.

Do I need a school bus endorsement if I drive a small van for a school?

It depends on the vehicle's size and weight. If the van is designed to carry 16 or more passengers (including the driver), you need a CDL with a school bus endorsement. If it carries 15 or fewer passengers, you may only need a regular driver's license, though some states have additional rules. Check with your state's DMV or your employer.

What happens if I fail the school bus endorsement test?

You can retake the test. Most states let you retake a failed test within a few days or weeks. There is usually a fee for each attempt. You can take the test as many times as needed until you pass, but some states limit how many times you can test in a certain period.

Can I lose my school bus endorsement after I get it?

Yes. If you are convicted of certain crimes, fail a drug or alcohol test, or accumulate serious traffic violations, your endorsement can be suspended or revoked. You can also lose it if you fail to pass the required medical examination during renewal.

Do I need the school bus endorsement if I am a substitute bus driver?

Yes. Substitute drivers must have the same CDL with school bus endorsement as full-time drivers. There is no separate license for substitute or part-time bus drivers.