https://www.pewresearch.org/short-reads/2017/02/15/u-s-students-internationally-math-science/#%3A%7E%3Atext=%28Among+12th-graders%2C+38%2Cto+include+more+recent+data.

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Objectively, no, it isn't. It's up there simply for it's ivy-league universities and the rich schools that exist within it. Majority of the country cannot read past an eighth grade reading level and the literacy rates are abysmal in some of the deep-south.

Schools are assigned funding based on the taxes given to them in the county/area they exist in. Poorer counties tend to have horribly funded schools, with state-owned charter schools not even doing that much better. All schools deserve to have a unified curriculum under a state institution with incredible funding and manpower. China has learned well from this, all though the lib-brainworms leak out when they just mention "Hong-Kong" in the pewresearch link.