There's a difference in being prudish about what kids are exposed to and just wishing it were done better.
"...The metaphor contained in its title is beauty itself. As one contemplates the growing of children in an environment where vision and the experience of life is constrained, like the birds they keep in a box for travel. Its necessary to stay alive, but it's not living..."
If you like mysteries, see this film. If you like character pieces, see this film. If you like playing against expectation, see this film. If you like being scared, see this film. If you like great movies, see this one.