As in many of Roald Dahl's books, the school in Matilda is a terrifying place—a place where adults like the Trunchbull can abuse students both physically and mentally, hurling them out windows, grabbing them by their ears, and screaming insults at them regularly. Even eating cake becomes a punishment at Crunchem Hall Primary. But, because of teachers like Miss Honey, and friends like Lavender, a school can also be a place of light and hope. The thing is, though, learning doesn't just happen at school. It can happen wherever the learner is, like a library, or even Matilda's bedroom. All you need is your own interest and a book, and you can go anywhere you want.
Matilda gets telekinetic powers because she's not being challenged. So that means that having super smart people be working below their full potential is totally dangerous. Let that be a lesson!
It's very lucky that Matilda was so underappreciated and underchallenged, because that leads to her telekinesis, which is what helps to save Miss Honey from her sticky situation. If Matilda had been appreciated from the get-go, Miss Honey would be right where she is—in poverty.