Jeff and Anna, Bus Life A new bus route plan for Kentucky's largest school district left students on buses until 10 p.m. The superintendent said he was forced to cancel classes for two days just to fix the issue. The school district is giving bus drivers time to practice their new routes over the weekend. The largest school district in Kentucky had to cancel two days of class after an overhaul of its new bus route system left several kids stranded on school buses until 10 p.m.In a video posted on Thursday, Jefferson County Public Schools Superintendent Marty Pollio said canceling school for two days on Thursday and Friday was "the most difficult decision of my superintendent career." The school district is home to Louisville, which is Kentucky's largest city with a population of 628,000, according to the US Census Bureau.