Literacy in the United States
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Adult literacy in the United States is assessed through national and international studies conducted by various government agencies and private research organizations. The most recent comprehensive data comes from a 2023 study conducted by the Department of Education's National Center for Education Statistics (NCES) as part of the OECD's Programme for the International Assessment of Adult Competencies.
In 2023, 28% of adults scored at or below Level 1, 29% at Level 2, and 44% at Level 3 or above. Adults scoring in the lowest levels of literacy increased 9 percentage points between 2017 and 2023. In 2017, 19% of U.S. adults achieved a Level 1 or below in literacy, while 48% achieved the highest levels.
Adults scoring at Level 3 or above are considered "proficient at working with information and ideas in texts" (see also § Definitions below). Adults scoring below Level 1 can comprehend simple sentences and short paragraphs with minimal structure but will struggle with multi-step instructions or complex sentences, while those at Level 1 can locate explicitly cued information in short texts, lists, or simple digital pages with minimal distractions but will struggle with multi-page texts and complex prose. In general, both groups struggle reading complex sentences, texts requiring multiple-step processing, and texts with distractions.
A 2020 analysis by Gallup in conjunction with the Barbara Bush Foundation for Family Literacy estimated that the U.S. economic output could increase by $2.2 trillion annually—approximately 10% of the national GDP—if all adults were at Level 3.