No it does not. There is no American school system. Never has been one.
We have tens of thousands of different systems. And within many of those individual systems we have different schools that often are very very different than other schools in the same district.
Math might be universal but the curriculum is not. Nor are the tests a true or proper reflection of what is taught or learned.
Kids learn what is taught. I taught many young people who excelled at learning history. I work for one of them today.
Many schools are doing a wonderful job. Many school districts excel. Many students are doing great. Give their teachers credit and give the unions credit.
But the point is that America does not have a school system for you to praise or criticize. It simply does not exist.
Would you support one?