Posey County emergency agencies were dispatched to a school bus crash around 3:30 Thursday afternoon.
Sheriff Tom Latham says the accident happened on State Road 62 and Sauerkraut Lane just west of Mt. Vernon.
The preliminary investigation supports the bus may have failed to yield the right of way to a vehicle traveling east on State Road 62.
The bus driver, a student, and the other driver were transported to the hospital with minor injuries.