I certainly did not have it myself, and my K-12 years were from 1985-1998 in Indiana (public school). We had an accounting class. We had a government class that taught how a bill becomes a law and all that. We even had a home economics class where we learned how to make pillows and pigs-in-blankets. But no personal finance whatsoever, and certainly no economics until college.
I distinctly remember approximately 15 minutes of relevant personal finance education in all my primary school years, when one math teacher went off-curriculum at the end of a class to show us the magic of compound interest. (It blew my mind)
Everything else, from balancing a checkbook (no that wasn't taught in accounting) to filling out tax forms to how credit cards work was either taught by my parents or self-learned through social context.
You do realize how many poor college students have been taken in by credit card offers that used to be right on campus to sign up gullible freshmen, don't you? Fortunately I think that has fallen out of practice (it got enough publicity that colleges now realize it makes them look bad, I think). But for how many years have millions of 18-year-olds fallen into this kind of trap?
You think any of those people had personal finance classes? I seriously, seriously doubt that. I think the vast majority of Americans (until recently) did not have any such formal education on how to navigate money in the real world.
I don't have any idea the prevalence of this kind of education in other countries, though.