A bus accident occurred at approximately 4:20 p.m. today (Friday) in St. Robert when a Waynesville R-VI School bus on Bus Route 49b backed into a tree. As a precautionary measure, an ambulance has been called to the scene and students are being examined by emergency personnel. Parents of students who ride Bus Route 49B are being notified by the transportation department. Another bus has been dispatched and will deliver the remaining students home.