CDL School Bus Practice Test

The School Bus (S) endorsement is the most safety-critical of all — you're responsible for children. The test centers on the danger zones around the bus and the loading and unloading procedures where most injuries happen. Practice all 42 questions with explanations. Most states also require the Passenger endorsement.

What's on the School Bus test

Covers the danger zones around the bus, loading and unloading procedures, the flat, convex, and crossover mirrors, managing and counting students, stopping at railroad crossings, backing safely, and emergency evacuation.

Study tips to pass

• The danger zone extends up to 30 feet in front of the bus and about 10 feet on the sides and rear.
• Most student injuries happen during loading and unloading — go slow and use your mirrors.
• Have students who must cross walk about 10 feet ahead, and cross only on your signal when it's clear.
• Always stop, open the door, look and listen at railroad crossings.

How it works

Each question on CDL Prep Hub comes with a plain-English explanation, so you learn the "why" behind every answer. Aim for 80% or better — that's the passing mark in most states — then take the timed exam simulator to rehearse the real format. No account needed; your best scores save in your browser.

Other CDL practice tests

Study material based on the official CDL manual. Not the official state exam — always review your state's CDL handbook before testing.