The pandemic destroyed the nature of mathematics and studies in both countries.

The pandemic and online schooling did not save any group of high or low performing children from a drop in performance.

In this assessment, there was no progress in subject achievement for any student group.

"For the nation's 9-year-olds, there were only declining or stable scores," said Peggy Carr, commissioner of the National Center for Education Statistics.

According to the report, "the achievement gap between white and black students widened in 2022 as the test scores of black students declined sharply compared to their white counterparts."

According to the report, even high-achieving students' test results have dropped for the first time in a decade.

The National Assessment of Educational Progress is managed by a section of the federal Department of Education, and is used to test students' math and reading abilities.

It is the only test that allows longitudinal comparisons between states and student groups. The results were collected from a nationally representative sample 

of nearly 15,000 9-year-olds, according to results released Thursday.

Between 2022 and 2020, average maths scores for 9-year-olds declined seven points, while average reading scores declined five points.