Its not as easy to figure out who the "best teachers" are though.
What do you base it on? Standardized testing? We all know that is garbage. Student surveys? Then the most "popular" teachers would walk and the least "popular" ones would get canned... effectiveness is not always a popularity contest.
It is hard to define what a good teacher is other than someone who really cares about students and puts in genuine effort. You know it when you see it but coming up with a way to measure it objectively would be difficult.
Of course, as someone who does not live in the USA I can tell you right now what your countries biggest problem in education is - teacher salaries and how you fund schools. The amount you pay your teachers in the US is shameful. No wonder you get so many bad teachers - what respectable, educated professional would want to teach and give up their whole future livelihood, it is an awful big ask to say we want the best but are unwilling to pay them for their effort.