CDL School Bus Endorsement (S)
This free CDL School Bus practice test covers loading and unloading procedures, railroad crossing rules, emergency evacuation, student management, and other high-frequency topics on the S Endorsement exam — all based on FMCSA CDL Handbook Chapter 10.
Click any question number to view the full explanation. We recommend working through these in order and aiming for 90% or higher before scheduling your actual knowledge test.
The CDL School Bus (S) Endorsement is required to drive any school bus designed to transport 16 or more passengers (including the driver), and is regulated jointly by individual state DMVs and the FMCSA.
The written knowledge test focuses on: loading and unloading safety procedures (stopping position, use of red warning lights and stop arm, confirming students reach a safe area), mandatory stops at railroad crossings, emergency exit operation, pre-trip safety inspections, and special needs student transportation regulations.
All 20 questions in this practice test cover these core topics. We strongly recommend pairing this test with a thorough review of Chapter 10 of the official FMCSA CDL Handbook.