| | Performance scale scores |
| Total, 2000 | 220 | (1.7) | 230 | (1.6) | 226 | (1.4) |
| Total, 2003 | 229 | (0.5) | 238 | (0.3) | 236 | (0.3) |
| Total, 2005 | 233 | (0.3) | 241 | (0.2) | 238 | (0.3) |
| Region |
| Northeast |
| 2000 | 217 | (2.6) | 235 | (2.6) | 230 | (4.1) |
| 2003 | 227 | (1.0) | 243 | (0.7) | 243 | (0.7) |
| 2005 | 230 | (0.9) | 246 | (0.5) | 245 | (0.8) |
| South |
| 2000 | 219 | (4.5) | 227 | (2.8) | 219 | (2.0) |
| 2003 | 229 | (0.9) | 242 | (0.6) | 240 | (0.5) |
| 2005 | 236 | (0.5) | 241 | (0.3) | 234 | (0.3) |
| Midwest |
| 2000 | 222 | (2.1) | 234 | (3.2) | 230 | (1.9) |
| 2003 | 232 | (0.8) | 238 | (0.5) | 233 | (0.4) |
| 2005 | 231 | (0.7) | 244 | (0.6) | 243 | (0.5) |
| West |
| 2000 | 221 | (3.1) | 225 | (2.7) | ‡ | ( ‡) |
| 2003 | 229 | (1.1) | 232 | (0.7) | 232 | (0.9) |
| 2005 | 233 | (0.5) | 235 | (0.5) | 235 | (0.7) |
| | Percentage distribution |
| Total, 2000 | 32 | (1.8) | 46 | (2.4) | 22 | (1.9) |
| Total, 2003 | 31 | (0.3) | 41 | (0.5) | 28 | (0.4) |
| Total, 2005 | 32 | (0.3) | 44 | (0.3) | 24 | (0.3) |
| Region |
| Northeast |
| 2000 | 31 | (2.6) | 50 | (2.8) | 19 | (2.4) |
| 2003 | 31 | (0.9) | 47 | (0.9) | 23 | (0.8) |
| 2005 | 29 | (0.7) | 54 | (0.7) | 17 | (0.5) |
| South |
| 2000 | 30 | (4.1) | 41 | (4.7) | 29 | (2.7) |
| 2003 | 28 | (0.6) | 39 | (0.9) | 34 | (0.8) |
| 2005 | 29 | (0.4) | 39 | (0.5) | 31 | (0.6) |
| Midwest |
| 2000 | 24 | (4.7) | 42 | (5.7) | 34 | (4.8) |
| 2003 | 30 | (0.5) | 35 | (0.6) | 34 | (0.6) |
| 2005 | 28 | (0.5) | 41 | (0.7) | 31 | (0.7) |
| West |
| 2000 | 39 | (2.9) | 50 | (4.7) | 11 | (4.0) |
| 2003 | 35 | (0.8) | 47 | (1.1) | 18 | (0.9) |
| 2005 | 42 | (0.7) | 45 | (0.6) | 13 | (0.5) |
| ‡ Reporting standards not met. |
| NOTE: For 2003 and later data, regions are based on U.S. Census Bureau classification. Data from 2000 were NAEP-defined regions such that Delaware, District of Columbia, and Maryland were classified as Northeast, and Oklahoma and Texas were classified as West (For more details, see figure A.2 of The Nation’s Report Card: Mathematics 2003 (NCES 2005–451)). The Census Bureau defines these five states as South. The NAEP Mathematics 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), 2000, 2003, and 2005 Mathematics Assessment, NAEP Data Explorer. |
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