LEFT BEHIND LEAP : GLOBAL STUDENTS ESSAY

IT'S not just the pandemic that has left students behind. Those with lowest scores were improving steadily, but 2013 brought a change.

There was once a time when America's lowest performing students were improving just as much as the country's top students.

Despite their low scores, these students at the bottom made slow but steady gains on national tests for much of the 2000s.

It was one sign that the U.S. education system was working, perhaps not spectacularly, but at least enough to help struggling students keep pace with the gains of the most privileged and successful.

TODAY, the United States lowest scoring students are in free fall.

The reason is not just the pandemic. For at least a decade, starting around 2013, students in the bottom quartile have been losing ground on the National Assessment of Educational Progress, a key exam that tests a national sample of fourth and eighth-grade students in math and reading.

The bottom quartile is made up of students from various backgrounds, but it includes a higher proportion of students with disabilities, students learning English and children from poor families.

Since the pandemic, their scores have often continued to fall, even as high achieving students stabilize.

'' Whatever is happening to the lower performers is still happening,'' said Nad Malkus, a senior fellow at the American Enterprise Institute, a right-leaning think tank, who has tracked the trend.

Researchers point to a number of educational and societal changes over the past decade, including a retrenchment in school accountability, the lasting effects of the Great Recession and the rise of smartphones, which has coincided with worsening cognitive abilities even among adults since the early 2010s.

Figuring out what has happened to the lowest performers is critical, not just for their futures, but for the country's success.

By leaving behind a huge swath of students, the United States is preparing fewer citizens to do the most technical and high-paying jobs, said Jason Dougal, who studies effective school systems at the National Center on Education and the Economy.

That only widens income inequality in the labor market, he said. And it pushes the United States further from top countries on education - places like Singapore, Japan and Ireland - which succeeded not just by raising scores for their top performers, but by lifting up their lowest students.

'' To get high average performance, you can't allow a significant portion of your population to be performing at low levels, '' Mr. Dougal said.

The Master Essay Publishing continues to Part 2. The World Students Society thanks Sarah Mervosh.