Breaking the scores down by [REMOVED] demystifies the problem. (It's not under-funding.) Certain US groups outperform most OECD countries while others do not.
DOE criteria for "proficient" entail performing three grades above your own level. The entire narrative about "America's failing public education system" falls apart when you account for [REMOVED].
https://www.amazon.com/Bad-Students-Not-Schools/dp/141281345X This convinced me