Bus Driver Bus Driver and Mechanic Certification Requirements Complete a 20-hour Certified School Bus Training Course 14 hours minimum classroom training Six hours minimum behind-the-wheel training Pass a comprehensive physical by a school-appointed physician annually Pass pre-employment and random drug testing screens Obtain a driving permit class B with the following endorsements: P for passenger S for school bus Air brake restriction removal Achieve a score of at least 80% on four written exams: School bus Air brake Passenger General knowledge Pass a school bus driver's exam in the following areas: Pre-trip inspection Site skill maneuvers Comprehensive road test Complete a recertification program every four years to maintain credentials in Pennsylvania