The CDL bus driver test will examine your knowledge on the following topics: Need a passing score of 80% or higher (16 correct answers).The school bus endorsement test can vary from state to state but you can expect the following when taking the written exam: You can take a passenger transport practice test to prepare for that. You must earn your CDL and passenger endorsement before you can earn this endorsement. The CDL school bus test is an endorsement test that is needed by those individuals who wish to drive a school bus.
