A lot of what teachers do is exactly just that—basically talking at the pupils, as if they were vessels who are supposed to have their heads filled up with knowledge.

Proper learning is supposed to be more active and pupil-directed. Look at the Deweyite schools in America.

If you find that to be a belittling description then I’m sorry, but that’s largely what teachers do. And it’s been critiqued for a long time by thoughtful people who care about pedagogy, so you can’t simply dismiss it as some kind of “woe be the state of education” phenomenom.