Free Idaho School Bus CDL Practice Test
8 real School Bus questions from the same bank our students use. No account, no email needed. You see the correct answer after each question, and your score at the end.
Take the Idaho School Bus test
School Bus is the S endorsement, and it sits on top of the P endorsement rather than replacing it. Most of what it covers happens outside the bus, which is why it is treated as a separate qualification from carrying adult passengers.
- 8 questions, from the 65-question School Bus bank, one for each key manual topic
- Practice mode: the correct answer and manual reference show after each question
- 80% is a pass, the same standard as the real Idaho CDL knowledge test
Takes about 3 minutes. Keyboard: A to D to answer, Enter for next.
At the end you get your score, the correct answer for anything you missed, and the CDL manual section to go back to. No account needed, and you can retake it as often as you like.
Already included in Idaho School Bus CDL Study Material and Idaho Complete CDL Study Material. On its own it is Idaho CDL School Bus Study Material. Not sure what you need? The CDL Selector works it out from a few questions.
About the Idaho School Bus test
The questions come from the Idaho CDL manual, they are multiple choice, and you need 80% to pass, the same standard as every other CDL knowledge test. Idaho Transportation Department gives it, and you sit it on top of the General Knowledge test rather than instead of it.
The S endorsement covers driving a school bus, and it sits on top of the P endorsement rather than replacing it: you hold both. It is the most procedure-heavy test of the set, because most of what it asks about happens outside the bus, around the danger zone, at crossings and during loading and unloading.
It is not the same in every state
The questions come from the same federal pool wherever you sit the test, but the rules around it are set by each state. Three real examples of what differs:
- Alaska: School Bus endorsement applicants must show they have held a license for at least 3 years.
- California: A CLP can only carry Tank, Passenger, and School Bus endorsements; HazMat is added to the CDL after the TSA check.
- Kansas: Adding a School Bus endorsement requires the P endorsement plus an S knowledge test and a road test in a representative school bus.
Quoted from each agency's own published guidance. Check Idaho Transportation Department for the rules that apply to you.
What it covers
Our 8 free questions and the full 65-question School Bus bank are drawn from these manual sections:
- Danger Zones and Use of Mirrors
- Loading and Unloading
- Emergency Exit and Evacuation
- Railroad-highway Crossings
- Student Management
- Antilock Braking Systems
- Special Safety Considerations
Every CDL applicant also sits the General Knowledge test, whatever class they are working toward. Try the free Idaho CDL permit practice test, or see which Idaho CDL endorsements you need.
What Idaho requires
- The CLP must be held at least 14 days before the skills test and is valid for one year.
- Two separate skills-test payments are made: $10 to the county and the examiner's fee directly to the examiner at the test.
- Your DOT medical examiner must be on the FMCSA National Registry.
- Idaho's ten-step CDL guide from ITD lays out the whole process in order.
Checked against Idaho Transportation Department on September 16, 2026. Rules change, so confirm anything that affects your booking before you travel.
Try another free CDL practice test
Each one is a different knowledge test, with real questions from the same bank our students use. No account and no email needed for any of them.
- Free CDL Permit practice test 10 questions
- Free Air Brakes practice test 7 questions
- Free Combination Vehicles practice test 8 questions
- Free HazMat practice test 6 questions
- Free Tanker practice test 6 questions
- Free Passenger practice test 6 questions
- Free Doubles & Triples practice test 6 questions
Where to go next
Work out which license class you need, then study the test that goes with it:
- Idaho CDL classes: what Class A, B and C each let you drive.
- Idaho CDL endorsements: H, N, P, S, T and X, and who needs each.
- What CDL do I need, by vehicle: the class and the tests for a dump truck, box truck, school bus, tanker and more.
- Idaho CDL study material: the full study guides, practice tests and narrated audio.
Other free CDL practice tests
Each CDL knowledge test is a separate exam, and every one of them has a free practice test here:
- Free CDL Permit Practice Testthe permit test
- Free Air Brakes CDL Practice Testa restriction removal, not an endorsement
- Free Combination Vehicles CDL Practice Testa core Class A test
- Free HazMat CDL Practice Testthe H endorsement
- Free Tanker CDL Practice Testthe N endorsement
- Free Passenger CDL Practice Testthe P endorsement
- Free Doubles & Triples CDL Practice Testthe T endorsement
See all eight free CDL practice tests →
Common questions
How long is the school bus test?
The length is set by your state, so Idaho Transportation Department is the place to ask. Federal rules require a set number of questions from an approved pool but do not publish a per-endorsement count. 80% passes.
Do I need the passenger endorsement as well?
Yes. The school bus endorsement sits on top of the passenger endorsement rather than replacing it, so you hold both P and S.
What does the school bus test cover?
The school bus section of the CDL manual, and it leans heavily on what happens outside the bus: the danger zones and mirror use, loading and unloading procedure, student management, railroad crossings, and emergency exit and evacuation.
Are there extra checks beyond the knowledge test?
States commonly add their own requirements for driving a school bus, which can include background checks, medical or physical requirements and state-specific training, separate from the CDL endorsement itself. Idaho Transportation Department sets those.