This bill mandates that all school bus drivers, including those employed by boards of education and private or parochial schools, undergo biannual unannounced medical testing for drugs and alcohol. The testing will occur twice each school year and is in addition to any other medical exams required by law. The timing of these tests will be determined by the employing board or contractor, who will also receive the results. If a driver tests positive or refuses to take the test, they will be immediately disqualified from operating a school bus. The Commissioner of Education is tasked with establishing criteria for disqualification and developing an appeal process for drivers who wish to contest their disqualification.

Additionally, the bill amends existing laws to require that evidence of the medical testing be filed with the county superintendent before any driver is assigned to operate a school bus. This includes the driver's name, social security number, valid school bus driver's license, criminal background check, and records of any alcohol or drug-related motor vehicle violations. The bill aims to enhance the safety of school transportation by ensuring that drivers are not under the influence of substances that could impair their ability to operate a vehicle safely.