Is there a country in the world where are the teachers paid well? I don't know of any. I suspect if there is a reason, it has nothing to do with America per se.
Mind you living expenses are high there but that's probably still quite a decent figure.
My sister was a Jr. High School teacher in South Korea. I was quite surprised how much she was earning as a teacher and, after her retirement years ago, she is collecting now (it's only 10%-20% less than the US average which seems to support the OECD data).