Police identified the driver killed in Thursday's crash as 66-year-old Kathleen Webb. A student from St. Luke Lutheran School was also in the van when it crashed Thursday afternoon in Clinton Township, Butler County.
Officials did not release the girl's age but say she was flown to a Pittsburgh hospital for treatment.
Webb was a driver for W.L. Roenigk, Inc. The company said she was a veteran driver with a good safety record.