WASHINGTON — America’s children have continued to lose ground on reading skills in the wake of the COVID-19 pandemic and have made little improvement in math, according to the latest results of an exam known as the nation’s report card.

The findings are yet another setback for U.S. schools and reflect the myriad challenges that have upended education, from pandemic school closures to a youth mental health crisis and high rates of chronic absenteeism. The national exam results also show growing inequality: While the highest-performing students have started to regain lost ground, lower-performing students are falling further behind.

Given every two years to a sample of America’s children, the National Assessment of Educational Progress is considered one of the best gauges of the academic progress of the U.S. school system. The most recent exam was administered in early 2024 in every state, testing fourth- and eighth-grade students on math and reading.

“The news is not good,” said Peggy Carr, commissioner of the National Center for Education Statistics, which oversees the assessment. “We are not seeing the progress we need to regain the ground our students lost during the pandemic.”

Among the few bright spots was an improvement in fourth grade math, where the average score ticked up 2 points on a scale of 500. It’s still 3 points lower than the 2019 pre-pandemic average, yet some states and districts made significant strides, including in Washington, D.C., where the average score increased 10 points.

For the most part, however, American schools have not yet begun to make progress.

The average math score for eighth-grade students was unchanged from 2022, while reading scores fell 2 points at both grade levels. One-third of eighth grade students scored below “basic” in reading, more than ever in the history of the assessment.

Students are considered below basic if they are missing fundamental skills. For example, eighth grade students who scored below basic in reading were typically unable to make a simple inference about a character’s motivation after reading a short story, and some were unable to identify that the word “industrious” means “to be hard working.”

Especially alarming to officials was the divide between higher- and lower-performing students, which has grown wider than ever. Students with the highest scores outperformed their peers from two years ago, making up some ground lost during the pandemic. But the lowest performers are scoring even lower, falling further behind.

It was most pronounced in eighth grade math: While the top 10% of students saw their scores increased by 3 points, the lowest 10% decreased by 6 points.

That could reflect investments by families in high-performing students’ recovery from the pandemic. “Families that had the resources, they hired extra tutors, they got extra support to build on what was going on in the classroom,” said Eric Mackey, superintendent of education in Alabama. “Families that either could not afford that or didn’t have the opportunity or resources for that continued to struggle.”

The latest setbacks follow a historic post-pandemic backslide in 2022. In that year’s exam, student achievement fell across both subjects and grade levels, in some cases by unprecedented levels.

This round of testing again featured students whose lives were disrupted by the pandemic. When COVID hit in 2020, the fourth graders were in kindergarten. The eighth graders were in fourth grade.

But Carr said poor results can no longer be blamed solely on the pandemic, warning the nation’s education system faces “complex challenges.”

A survey done alongside the exam found in 2022 that fewer young students were reading for enjoyment, which is linked to lower reading scores.

New survey results found students who are often absent from class — a persistent problem nationwide — are struggling the most.