Colorado School Bus Test
You'll drive kids in snow on I-70 and over mountain passes like Monarch Pass — this test prepares you for that reality.
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This is the Colorado School Bus endorsement test. 20 questions, 80% to pass, timed at 25 minutes.
Key Topics
- •Loading/unloading & stop-arm laws
- •Emergency exits & evacuation
- •Winter driving & mountain grades
About the Colorado School Bus Test
Topics Covered
- ✓Loading and unloading procedures – Colorado has strict stop-arm laws, especially on highways like US 285 where traffic doesn't slow down. You need to know the exact sequence to avoid fines and keep kids safe.
- ✓Student management and safety – You're responsible for kids on a bus that might get stuck in a snowstorm on I-70. Colorado examiners want you to know how to handle disruptive students and emergency evacuations in cold weather.
- ✓Railroad crossing procedures – Colorado has many rural crossings with no gates. You must know when to stop, how far, and when it's safe to proceed, especially in low-visibility conditions.
- + 3 more topics
📘 Study Tips & State Info
Colorado DMV examiners focus on two things: the pre-trip inspection and the loading/unloading sequence. They want to see that you can actually find the emergency exits on a real bus and explain how they work. Don't just memorize the manual — practice on a bus if you can.
Pay special attention to railroad crossings. Colorado has specific rules about when to stop and how far from the tracks. They'll ask about crossings with no signals, which are common in rural areas like the San Luis Valley. Also study the Colorado school bus laws about passing stopped school buses — the fines are steep and examiners know it.
For the written test, focus on the Colorado CDL manual's school bus section. It's about 30 pages. Read it twice. Then take practice tests until you're scoring 90% or better. The real test questions aren't tricky — they're straightforward if you've studied the material. But some questions have two good answers, and you need to pick the best one. That's where practice helps.
Colorado CDL written tests are administered at most DMV offices that offer CDL services. You'll find them in Lakewood (the main office), Denver, Colorado Springs, Fort Collins, Grand Junction, Durango, Pueblo, and several other locations. Appointments are strongly recommended — you can book online at Colorado DMV's website. Walk-ins are accepted but expect to wait an hour or more, especially in the summer.
The fee for the School Bus endorsement written test is $30 (as of 2026). You pay per endorsement test. If you're getting your CLP at the same time, there's an additional fee. Bring your current CDL, your medical examiner's certificate, and proof of residency. If you don't have a CDL yet, you'll need to pass General Knowledge and the Passenger endorsement test first — Colorado requires the P endorsement before you can take the S test.
One Colorado-specific requirement: you must submit to a background check and fingerprinting if you're applying for a school bus endorsement for the first time. The DMV will give you instructions. It's separate from the written test, so plan ahead. The background check can take a few weeks, but you can take the written test while it's processing.
About the Colorado School Bus Test
Driving a school bus in Colorado isn't like driving one in Kansas. You're dealing with I-70 through the mountains, two-lane highways like CO 9, and weather that can change from clear to whiteout in ten minutes. The Colorado School Bus test covers everything you need to keep kids safe on those roads.
This endorsement is for the S on your CDL. You need it if you'll drive a school bus for any public or private school. Colorado requires you to pass this written test before you can take the skills test in a school bus. The test has 20 multiple-choice questions, and you need 16 correct to pass.
The test covers student loading and unloading, emergency exits, railroad crossings, pre-trip inspection specific to school buses, and student management. Colorado examiners also pay attention to winter driving procedures — chains, stopping distances on ice, and how to handle a bus on a steep grade like Wolf Creek Pass.
You'll take this test at any Colorado DMV CDL office — Lakewood, Denver, Colorado Springs, or smaller offices in places like Durango or Grand Junction. Bring your medical card and your current CDL. Appointments are recommended; walk-ins are possible but you might wait.
Topics Covered
Study Tips
Colorado DMV examiners focus on two things: the pre-trip inspection and the loading/unloading sequence. They want to see that you can actually find the emergency exits on a real bus and explain how they work. Don't just memorize the manual — practice on a bus if you can.
Pay special attention to railroad crossings. Colorado has specific rules about when to stop and how far from the tracks. They'll ask about crossings with no signals, which are common in rural areas like the San Luis Valley. Also study the Colorado school bus laws about passing stopped school buses — the fines are steep and examiners know it.
For the written test, focus on the Colorado CDL manual's school bus section. It's about 30 pages. Read it twice. Then take practice tests until you're scoring 90% or better. The real test questions aren't tricky — they're straightforward if you've studied the material. But some questions have two good answers, and you need to pick the best one. That's where practice helps.
Colorado Specific Information
Colorado CDL written tests are administered at most DMV offices that offer CDL services. You'll find them in Lakewood (the main office), Denver, Colorado Springs, Fort Collins, Grand Junction, Durango, Pueblo, and several other locations. Appointments are strongly recommended — you can book online at Colorado DMV's website. Walk-ins are accepted but expect to wait an hour or more, especially in the summer.
The fee for the School Bus endorsement written test is $30 (as of 2026). You pay per endorsement test. If you're getting your CLP at the same time, there's an additional fee. Bring your current CDL, your medical examiner's certificate, and proof of residency. If you don't have a CDL yet, you'll need to pass General Knowledge and the Passenger endorsement test first — Colorado requires the P endorsement before you can take the S test.
One Colorado-specific requirement: you must submit to a background check and fingerprinting if you're applying for a school bus endorsement for the first time. The DMV will give you instructions. It's separate from the written test, so plan ahead. The background check can take a few weeks, but you can take the written test while it's processing.