From Section 10 of the Idaho Commercial Driver’s License Manual

Idaho CDL School Bus Practice Test

Who takes it: Class B and C, for the S endorsement.

Driving a school bus. 20 questions, 16 right to pass (80%).

Study mode

Practice School Bus

  • 10questions a round
  • 1manual section
Exam mode

Take the School Bus test

  • 20questions
  • 16correct to pass
  • –no test taken yet
Section 10 · p. 125–135 of the Idaho Commercial Driver’s License Manual (July 2026), opens in a new tab

A School Bus question to try

You smell smoke coming from the engine of your school bus. What must you do?

Tap an answer to see if you’re right, and the page

Where it is in the Idaho Commercial Driver’s License Manual

Your score on each part fills in as you study.

  • Manual section 10
  • School busNot practiced yetp. 10-1 to 10-11

Idaho answers about this test

CDL School Bus Test guide16 rules, with the pages in each state's manual

Practice material, not the official test: check every answer in your state's current handbook. Disclaimer · How the rounds work · DMV

All Idaho CDL tests