| | Performance scale scores |
| Total, 2002 | 258 | (0.7) | 268 | (0.7) | 266 | (0.6) |
| Total, 2003 | 258 | (0.5) | 267 | (0.5) | 264 | (0.4) |
| Total, 2005 | 257 | (0.4) | 266 | (0.3) | 263 | (0.4) |
| Race/ethnicity |
| White |
| 2002 | 272 | (0.8) | 274 | (0.8) | 270 | (0.5) |
| 2003 | 274 | (0.6) | 275 | (0.4) | 269 | (0.4) |
| 2005 | 272 | (0.5) | 273 | (0.3) | 267 | (0.3) |
| Black |
| 2002 | 243 | (1.0) | 251 | (1.3) | 244 | (1.0) |
| 2003 | 243 | (0.6) | 247 | (1.0) | 244 | (1.0) |
| 2005 | 241 | (0.6) | 247 | (0.9) | 241 | (1.1) |
| Hispanic |
| 2002 | 246 | (1.0) | 247 | (1.3) | 249 | (2.4) |
| 2003 | 244 | (1.1) | 246 | (1.0) | 246 | (1.5) |
| 2005 | 245 | (0.6) | 247 | (0.7) | 248 | (1.3) |
| Asian/Pacific Islander |
| 2002 | 261 | (2.4) | 271 | (2.4) | 269 | (2.1) |
| 2003 | 265 | (1.8) | 275 | (1.6) | 266 | (1.6) |
| 2005 | 270 | (1.1) | 273 | (1.2) | 265 | (2.1) |
| American Indian/Alaska Native |
| 2002 | ‡ | ( ‡) | 258 | (3.2) | 243 | (5.1) |
| 2003 | 246 | (3.4) | 246 | (10.3) | 247 | (2.1) |
| 2005 | 250 | (2.0) | 254 | (2.3) | 246 | (2.0) |
| | Percentage distribution |
| Total, 2002 | 29 | (0.6) | 42 | (0.7) | 29 | (0.5) |
| Total, 2003 | 29 | (0.4) | 41 | (0.4) | 29 | (0.4) |
| Total, 2005 | 31 | (0.4) | 43 | (0.4) | 25 | (0.3) |
| Race/ethnicity |
| White |
| 2002 | 19 | (0.6) | 44 | (0.7) | 36 | (0.6) |
| 2003 | 20 | (0.4) | 44 | (0.5) | 37 | (0.5) |
| 2005 | 20 | (0.4) | 47 | (0.5) | 33 | (0.4) |
| Black |
| 2002 | 51 | (1.5) | 31 | (1.6) | 18 | (0.8) |
| 2003 | 49 | (1.1) | 33 | (1.0) | 17 | (0.8) |
| 2005 | 50 | (0.9) | 34 | (0.9) | 16 | (0.5) |
| Hispanic |
| 2002 | 48 | (1.5) | 40 | (1.5) | 13 | (1.3) |
| 2003 | 47 | (1.0) | 40 | (1.2) | 13 | (0.9) |
| 2005 | 50 | (0.7) | 39 | (0.7) | 10 | (0.5) |
| Asian/Pacific Islander |
| 2002 | 41 | (2.6) | 51 | (2.7) | 8 | (0.7) |
| 2003 | 39 | (1.9) | 51 | (1.8) | 10 | (0.7) |
| 2005 | 47 | (1.4) | 45 | (1.4) | 8 | (0.6) |
| American Indian/Alaska Native |
| 2002 | 21 | (4.5) | 24 | (3.3) | 55 | (5.6) |
| 2003 | 20 | (2.1) | 30 | (3.9) | 50 | (3.2) |
| 2005 | 19 | (1.4) | 25 | (2.3) | 56 | (2.3) |
| ‡ Reporting standards not met. |
| NOTE: The NAEP Reading scale ranges from 0 to 500. Observed differences are not necessarily statistically significant. Detail may not sum to totals because of rounding. Standard errors appear in parentheses. |
| SOURCE: U.S. Department of Education, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2002, 2003, and 2005 Reading Assessment, NAEP Data Explorer. |