It's Poverty

An article in the Pacific Standard talks about the real problem in our schools: 

But what if it turned out that education reform, with its teacher-blaming assumptions, got it all wrong in the first place? That’s the conclusion being drawn by a growing number of researchers who, armed with a mountain of fresh evidence, argue that 30 years of test scores have not measured a decline in America’s public schools, but are rather a metric of the country’s child poverty—the worst among developed nations—and the broadening divide of income inequality.