About 15 kids, around 5 or 6 years old, were on board the bus at the time of the accident, but none were injured.
The bus driver suffered minor to moderate injuries and was transported to a local hospital.
The driver of the Kia fled the scene, but Ontario police took him into custody a short time later. He's facing a felony hit-and-run charge, among others.
The California Highway Patrol is investigating the accident, while Ontario police handle the criminal investigation.