Quote 4
The children's eyes were riveted on the Headmistress. "I don't like small people," she was saying. "Small people should never be seen by anybody. They should be kept out of sight in boxes like hairpins and buttons. I cannot for the life of me see why children have to take so long to grow up. I think they do it on purpose." (13.68)
Boy, it's getting pretty clear just how unimportant and insignificant the Trunchbull thinks children are. It's hardly the attitude you'd expect from someone who's been entrusted with running an entire elementary school, but it's totally the attitude you'd expect from someone as mean as the Trunchbull.
Quote 5
[The Trunchbull] said, "I have never been able to understand why small children are so disgusting. They are the bane of my life. They are like insects. They should be got rid of as early as possible. We get rid of flies with fly-spray and by hanging up fly-paper. I have often thought of inventing a spray for getting rid of small children. How splendid it would be to walk into this classroom with a gigantic spray-gun in my hands and start pumping it. […]" (14.1)
The Trunchbull really knows how to pay a compliment, doesn't she? Kids are about as useful to her as the pests that invade a farmer's crops. Why else would she be suggesting adults should spray them with poison? It's pretty nervy of her to say something like that in public, right? In any U.S. classroom today, a teacher who said something like that would be so fired, so fast.
Quote 6
"I am glad to see," she said, "that there are no slimy creatures in my drinking-water this time. If there had been, then something exceptionally unpleasant would have happened to every single member of this class. And that includes you, Miss Honey." (20.15)
When people play pranks on her, the Trunchbull becomes even more determined to be violent and evil. She just takes them as excuses that let her punish other people. She'd be mean anyway, but when someone plays a prank, that makes it even easier for her to unleash her violent side and lash out.