Download or read book CDL Study Guide: School Bus Endorsement written by CDL Digest and published by CDL Digest. This book was released on with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: This CDL practice test study guide contains information for those who drive a school bus; therefore needing a School Bus Endorsement on their CDL license. School Bus Endorsement written exam practice test questions and answers.