Laws were then created to *force* everyone into these factories during their most impressionable years.
Former Communist leader Vladimir Lenin, responsible for 4 million deaths once said: "Give us the child for 8 years and it will be a Bolshevik forever."
Compulsory "education" is the crown jewel of government control. After 18 years in the factory, they're quite confident that you won't think outside of how you've been taught to think. You'll be too afraid to.
Fortunately, modern communication technologies are not only taking down government's other propaganda tool (the Mainstream Media), but they're also enabling people to get their kids out of the government's "education" grip.