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Missouri School Bus CDL Endorsement Steps

3 min read

To legally operate a school bus in Missouri, commercial drivers must obtain an “S” (School Bus) endorsement on their Commercial Driver License (CDL). This endorsement ensures that drivers are fully trained to transport children safely and meet all federal and state requirements. The Missouri Department of Revenue (DOR) and the Federal Motor Carrier Safety Administration (FMCSA) oversee the process, which includes a background check, specific tests, and additional qualifications.

Step 1: Hold a Valid Missouri CDL

Before applying for a school bus endorsement, you must first possess a valid Missouri CDL or meet all eligibility requirements to apply for one. This includes:

  • Being at least 21 years of age for interstate driving or 18 for intrastate driving.
  • Meeting vision and medical standards set by the FMCSA.

Refer to the Getting a CDL in Missouri resource for full details.

Step 2: Obtain a CLP with P and S Endorsements

Apply for a Commercial Learner’s Permit (CLP) with both “P” (Passenger) and “S” (School Bus) endorsements. Requirements include:

  • Passing knowledge tests for general CDL, passenger transport, and school bus operations.
  • Providing proof of identity and Missouri residency.
  • Paying applicable testing and permit fees.

Step 3: Undergo Background Checks and Fingerprinting

To meet federal requirements under the Jessica Lunsford Act and state laws, all school bus drivers must:

  • Submit to a criminal background check via the Missouri State Highway Patrol.
  • Undergo FBI fingerprinting for national clearance.

Any disqualifying offenses may prevent endorsement issuance.

Step 4: Complete School Bus-Specific Training

Missouri mandates training in areas such as:

  • Emergency procedures and evacuation
  • Safe loading and unloading practices
  • Use of mirrors and blind spot awareness
  • Managing student behavior
  • Adhering to Missouri’s school bus traffic laws (Missouri School Bus Safety Law Overview)

Training may be provided by school districts or certified training providers and often includes a behind-the-wheel component.

Step 5: Pass Skills Testing

After holding the CLP for at least 14 days and completing training, schedule and pass the CDL skills test, which includes:

  • Pre-trip vehicle inspection
  • Basic vehicle control
  • On-road driving with a school bus

Testing must be performed in a vehicle representative of a school bus.

Step 6: Submit Documentation and Pay Fees

Once all testing and background checks are completed:

Step 7: Maintain Certification and Renew as Required

The S endorsement must be renewed along with your CDL. You must:

Missing deadlines or failing to provide updated documents may result in endorsement suspension or CDL disqualification.


Missouri ensures that school bus drivers are well-trained and qualified to protect passengers. The endorsement process involves extensive safety checks, tests, and training to uphold that standard.