CO CDL School Bus Marathon
What to expect on the actual CO CDL exam
- 16correct answers to pass
- 80%passing score
Get ready for your CO School Bus endorsement exam with this marathon practice test. Unlike our regular practice tests, it’ll cycle through all of the available questions until you have answered all of them correctly. If you miss a question, we’ll show it to you again at a later point.
CO CDL Handbook
View the most recent (2023) official CO CDL Handbook.Explore