Fourth-grade NAEP U.S. history achievement-level results
  
 
Findings
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The percentage of students performing at or above  Basic in 2006 was higher than in 1994 and 2001. 
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The percentage at or above  Proficient in 2006 was not statistically different from the percentages in 1994 or 2001. 
* Significantly different from 2006.
NOTE: View complete data with standard errors.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 1994, 2001, and 2006 U.S. History Assessments.