It doesn't.

It's a consequence of government departments and school administration lacking knowledge of pedagogy forcing underpaid and overworked educators to teach their pupils how to pass standardized tests. It's a consequence of a cultural and societal de-prioritization and outright disdain for critical thinking.

It's a consequence of shifting the focus away from learning how to learn and towards learning how to work, a focus that has clearly impacted your view of education. You were failed by a system that was designed to fail you.

It clearly teaches children how to learn in a way that serves the ruling class: uncuriously, only on command, and not beyond specifications.

It teaches them to be good employees.