Humanities Indicators
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I-1b: Reading Performance of 13-Year-Olds as Measured by the National Assessment of Educational Progress Long-Term Trend Assessment, 1971–2012*

* See this indicator’s supporting table for information as to which year-to-year changes are statistically significant.
** Data for years 2004 and later are based on a revised assessment. See for an overview of the differences between the original and revised assessments.

Source: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, The Nation’s Report Card: Trends in Academic Progress 2012, NCES 2012-456 (Washington, DC: U.S. Government Printing Office, 2012), 15 fig. 6.

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