All your missed questions are saved
automatically for extra practice.
It's a practice test that's automatically made up of all your missed questions. Once you finish this test, you’ll be able to revisit your Challenge Bank™ to practice and sharpen your skills.
View All PlansAdding difficult questions to Challenge Bank™ is an exclusive Premium feature. Unlock access to 650+ exam-like questions, a Pass Guarantee, personalized study plans, and more.
View All Plans| 90-100 | => | 9% |
| 80-89 | => | 36% |
| 70-79 | => | 18% |
| 60-69 | => | 18% |
| <60% | => | 18% |
To drive California school buses,California requires all applicants to pass the California CDL DMV School Bus “S” Endorsement Knowledge Test. Additionally, to transport students, you’ll need to obtain the Passenger “P” endorsement and satisfy all other federal, state, and district requirements. Many school districts also add their own safety, training, or evaluation requirements, so check with your local authority. The topics covered on the knowledge test are extensive, but rest assured that our California CDL School Bus “S” Endorsement Practice Tests are designed to ensure you pass on your first attempt.
The California School Bus Knowledge Test focuses largely on loading and unloading procedures, because this is where most injuries occur. The manual defines “danger zones” as extending up to thirty feet in front of the bus (the first twelve feet are labeled the most hazardous), and twelve feet along each side and behind the vehicle. Understanding these zones and knowing how to monitor them through constant mirror use (and proper mirror adjustment to cover blind spots) is a key concern and will certainly be covered on your test.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
Most student fatalities happen while they are getting on or off the bus, so California’s rules surrounding stops, hazard scanning, and handrail checks are paramount. Drivers are also expected to watch until every child reaches a safe point away from the vehicle before moving the bus again. When routes are complete, the state requires a post-trip walkthrough to check for sleeping children, left-behind items, and any mechanical concerns or vandalism. All of these topics and more are potentially tested on the official exam and covered on our California CDL School Bus “S” Endorsement Practice Tests.
Our California School Bus “S” Endorsement Practice Tests are modeled after the official exam structure. We also provide AI-driven feedback, an interactive CDL Manual, and our state-of-the-art Challenge Bank of questions that remembers any missed questions and presents them again until you’ve mastered them. These features help ensure you are ready to pass your official exam on the first attempt. Once you’ve aced this practice test, try another one from our series: https://driving-tests.org/california/ca-cdl-school-bus-practice-test/.
We also offer our series of Passenger “P” Endorsement Practice Tests designed specifically for the official California knowledge test: https://driving-tests.org/california/ca-cdl-passenger-vehicles-practice-test/. Also, most full-size school buses are equipped with air brakes, so passing the Air Brakes Knowledge Test is a good idea. We have practice tests for that, too: https://driving-tests.org/california/ca-cdl-air-brake-practice-test/.
Driver’s Ed is - nobody wants to set foot inside the DMV. That’s why millions of learners trust us for simple, visual, effective prep.
We are an officially recognized FMCSA Entry-Level Driver Training provider and a proud partner to over 2,500 libraries. We work with safety organizations like GHSA and the National Safety Council to help create safer roads for everyone.
Our trademarked system automatically saves questions you miss, creating personalized tests that target your weak spots until you’ve mastered the material.
Get smarter as you study. Our new AI-powered feedback provides detailed, question-level insights to help you understand the why behind each answer.
Go beyond the boring black-and-white manual. Our interactive handbook lets you read, listen with an MP3 audio version, or even chat with it to find the information you need, faster.
We build our practice questions from the current 2026 CA Driver Handbook and refine them using patterns recent test‑takers report.
Driver handbook • Knowledge‑test/permit overview • Fees & ID requirements • Office/appointment info
We mirror recurring themes (e.g., right‑of‑way traps, sign look‑alikes) and use similar distractors and wording styles.
We don’t collect or publish actual test items and we’re not affiliated with DMV.
