For each subject area, links to the total number of items and the numbers of items in each subject area scale for each grade level are provided in the tables below. Item counts are available for each scale as defined in the final Item Response Theory (IRT) scales, as well as prior to the IRT scaling.
| Year | Subject area |
|---|---|
| 2008 | Arts |
| 2007 | Mathematics |
| Reading | |
| Writing | |
| 2006 | Civics |
| Economics | |
| U.S. History | |
| 2005 | Mathematics |
| Reading | |
| Science | |
| 2003 | Mathematics |
| Reading | |
| 2002 | Reading |
| Writing | |
| 2001 | Geography |
| U.S. History | |
| 2000 | Mathematics |
| Reading | |
| Science | |
| SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), Various years, 2000–2008. | |
| Year | Subject area |
|---|---|
| 2008 | Mathematics long-term trend |
| Reading long-term trend | |
| 2004 | Mathematics long-term trend |
| Reading long-term trend bridge study | |
| SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), Long-term Trend Assessments 2004 and 2008. | |
