|Figure 13-1: Average reading scale scores on the long-term trend National Assessment of Educational Progress (NAEP), by age: Various years, 1971 through 2008|
NOTE: Includes public and private schools. NAEP scores range from 0 to 500. Scores for the revised assessment format reflect the inclusion of and accommodations for students with disabilities and English language learners. For more information on NAEP, see supplemental note 4.
SOURCE: Rampey, B.D., Dion, G.S., and Donahue, P.L. (2009). NAEP 2008 Trends in Academic Progress in Reading and Mathematics (NCES 2009-479). National Center for Education Statistics, Institute of Education Sciences, U.S. Department of Education, Washington,DC.