Reading scores among 15-year-olds in the United States have fallen to the lowest level in about 25 years, according to an international education assessment.

On Tuesday, the Organisation for Economic Co-operation and Development (OECD) released findings from the 2025 Programme for International Student Assessment (PISA), a global metric for educational achievement.

The results showed that US reading scores fell 14 points from 2022, the last time PISA results were released.

The decline was part of a broader international trend, with an OECD average from 23 countries also dropping 16 points.

But the US stood out for the size of its performance gap. Some 25.7 percent of US students were ranked as low performers in reading, while 13.3 percent were flagged as top performers.

“Looking across all 90 participating countries, there was not a single country with significantly wider inequality in reading scores than the US,” Michael Kieffer, a professor of literacy education at New York University, told Al Jazeera. “What is clear is that we are under-serving many students.”