Teachers are opinionated, as are books. And they all are a checks and balances between them and administration. Admins make sure there's a core curriculum driven by the proper literature. Teachers work off that base to teach and offer their own personality with it. Books tend to be a neutral ground to pull on making any given person too opinionated.

Sure, they admin or government can ban a book or fire a teacher, but that takes energy and time.

Automating all that to have the administration tweak lesson plans to their will sounds like a cliche dystopian sci-fi plot. Oh how little I knew.