On a flight from San Francisco to Paris we had three classes : total 88 kids!! The other passengers, at the airport counter started to panic when they saw the line of kids with their plane tickets in one hand, a suitcase in the other. Some asked to switch flights, 11 hours with a wild bunch of kids! No way! But we were very strict with discipline and we had many activities for them to do: they all had a journal with game ( no electronics!!) stories to write, letters to the parents, the movies ( not always for them!!) We never had any problem and the passengers came to thank the teachers and the children for such behavior!
This one is very quiet listening to music!