I think the way to understand those lines from The Wall Greg F quoted is with a couple of extra hyphens:

We don't need no-education
We don't need no-thought control.
No dark sarcasm in the classroom!
Hey! Teacher! Leave those kids alone....

The song is not attacking education - it's attacking the way in which the school system often betrays its principles, and stifles rather than liberates. Gradgrindery.