A school bus owned by Raymond E. Groff Inc. of Lititz collided with a Case tractor in the 700 block of Rettew Mill Rd. in Ephrata Township. There were six students on the bus at the time of the crash. There were no reported injuries by any parties involved. Police determined that the bus attempted to pass the tractor on the left just prior to the tractor making a left turn and striking the bus as it attempted to pass the tractor. Both vehicles sustained non-disabling damage.