How do you keep rowdy children quite on school bus?

My personal suggestion would be to watch them and find out who sits by who and who the most rowdy are make seating changes have them split from one end to the other if this does not work next level eject them from the bus go to the principal and explain tell them for the safety of the others while you driving it is making it difficult and they should be removed or call the parents. Make an example and make sure the others know what happened to them and they will be next.