For a country known for world-class universities and innovation, the United States faces a quieter challenge: literacy; especially when measured beyond basic reading ability.
According to the National Literacy Institute, about 79% of U.S. adults are considered fully literate, while 21% are functionally illiterate, meaning they struggle with everyday reading tasks. Even more striking, over half of adults read below a sixth-grade level (National Literacy Institute, 2024–2025). https://www.thenationalliteracyinstitute.com/2024-2025-literacy-statistics
Globally, this places the U.S. in a surprising position. Among developed nations, U.S. adults rank around the middle of the pack in literacy skills, according to OECD data (via the U.S. Department of Education). https://ies.ed.gov/learn/press-release/u-s-adults-score-par-international-average-literacy-skills-below-international-average-numeracy-and
Student performance reflects a similar pattern. U.S. students perform above average in reading, but lag behind top-performing countries in math and only modestly exceed averages in science (NCES / OECD PISA data).
https://nces.ed.gov/fastfacts/display.asp?id=1
Meanwhile, most post-industrialized countries report literacy rates above 95%, highlighting how far the U.S. trails its peers in consistent outcomes. https://worldpopulationreview.com/country-rankings/literacy-rate-by-country
Now consider Iran, a country currently in the global spotlight. Despite economic and political differences, Iran’s adult literacy rate is around 88–90%, with youth literacy reaching nearly 99%, according to World Bank and global education data.
https://data.worldbank.org/indicator/SE.ADT.LITR.ZS?locations=IR
https://ourworldindata.org/literacy
This doesn’t mean Iran’s education system outperforms the U.S. overall, but it does highlight an important distinction: basic literacy is more uniformly distributed there, especially among younger generations.
The U.S. story is one of contrast. At the top end, it produces some of the most highly educated individuals in the world. But across the broader population, literacy outcomes are uneven and that gap carries real consequences for workforce readiness, economic mobility, and civic participation.
Historically, much of America’s progress has been fueled by educated immigrants, helping offset domestic gaps in skills and education. As immigration policies tighten, improving literacy at home becomes even more critical.
The takeaway is clear:
The United States isn’t failing, but it is falling short of its peers in consistency, and in a knowledge-driven global economy, that gap matters.
The Academic Credentials Evaluation Institute, Inc. (ACEI), was founded in 1994 and is based in Los Angeles, CA, USA. ACEI is a full-service company providing complete and integrated services in the areas of international education research, credential evaluation, training and consultancy. https://acei-global.org/
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