Yep. I math, and few other things, is often exist only one right answer, but we know, the life is more than math ;)

The time, when the public education was born, wasn't sample, so the people didn't know, how have to build the system. So they choosed the familiar thing, the "factory-model". And right now, the classic education works as the fabric-row in a factory.
They want to teach same thing for everyone. Doesnt matter, the kid have a talent or not, have an interest or not.

In 21. century, the world change so fast, so we need adapt same fast. This have to teach in school.
But they didnt do this.
And the result, that can we see every day, everywhere on the world.