As far as I can determine with a google search, you are the first person to connect Hellman's play The Children's Hour with the theory of the butterfly effect. It is an interesting concept that deserves to be explored. The concept of the butterfly effect is that even the smallest of actions, like the flapping of a butterfly's wings, could have the greatest of consequences. Imagine that the wind created by the flapping wings caused enough of a change in atmospheric pressure to create a tornado many miles away.
In The Children's Hour, just such a minor event, an argument between a woman and her aunt that is overheard by a scheming student, leads to a series of events that change the lives of all the characters.
Perhaps you should write an essay using The Children's Hour as an example of the butterfly effect theory. It would be an interesting thing to read.