Two elementary school students were injured Wednesday afternoon when an alleged drunk driver collided with their school bus on Buford Highway, authorities said.Forsyth County Fire Capt. Jason Shivers said the students suffered minor injuries and were taken by ambulance to Northside Hospital-Forsyth for treatment. They were later transferred to Children’s Hospital of Atlanta. Their conditions could not be determined Thursday.The collision happened about 3:15 p.m. Wednesday at Buford Highway (Hwy. 20) and Trammel Road.