A school bus driver knowledge examination will be given by the Department to every applicant for an S endorsement and, every 4 years, to a holder of an S endorsement. The examination shall consist of 25 questions taken from the most recent edition of the Pennsylvania School Bus Driver's Manual. Eighty percent of the questions answered correctly is a passing grade.
67 Pa. Code § 71.6
The provisions of this § 71.6 issued under the Vehicle Code, 75 Pa.C.S. §§ 1504(c), 1509 and 6103.