In a new annual report from the Missouri State Highway Patrol, the Columbia Public School District’s bus fleet comes in just below the state average on school bus maintenance standards. The report looks for defects in school buses and deems them approved, defective, or out-of-service. Columbia Public School district had 23 buses ruled defective and four put out of service, meaning that 85 percent of the district’s 188 buses were approved as up to standard. The state average for approved buses is 89 percent.