| State | Reading | Mathematics | ||
|---|---|---|---|---|
| Correlation coefficient | Standard error | Correlation coefficient | Standard error | |
| Alabama | 0.71 | 0.060 | 0.72 | 0.055 |
| Alaska | 0.81 | 0.042 | 0.82 | 0.037 |
| Arizona | 0.78 | 0.049 | 0.83 | 0.037 |
| Arkansas | 0.80 | 0.047 | 0.84 | 0.029 |
| California | 0.83 | 0.030 | – | † |
| Colorado | 0.85 | 0.031 | 0.89 | 0.020 |
| Connecticut | 0.87 | 0.035 | 0.91 | 0.027 |
| Delaware | 0.87 | 0.037 | 0.83 | 0.038 |
| District of Columbia | 0.85 | 0.037 | 0.86 | 0.033 |
| Florida | 0.73 | 0.045 | 0.65 | 0.045 |
| Georgia | 0.46 | 0.110 | 0.80 | 0.039 |
| Hawaii | 0.71 | 0.057 | 0.71 | 0.049 |
| Idaho | 0.44 | 0.108 | 0.61 | 0.073 |
| Illinois | 0.83 | 0.024 | 0.81 | 0.028 |
| Indiana | 0.67 | 0.066 | 0.72 | 0.052 |
| Iowa | 0.71 | 0.050 | 0.73 | 0.055 |
| Kansas | 0.70 | 0.075 | 0.69 | 0.059 |
| Kentucky | 0.72 | 0.048 | 0.70 | 0.051 |
| Louisiana | 0.74 | 0.053 | 0.78 | 0.043 |
| Maine | 0.73 | 0.028 | 0.83 | 0.019 |
| Maryland | 0.80 | 0.031 | 0.83 | 0.027 |
| Massachusetts | 0.86 | 0.032 | 0.83 | 0.030 |
| Michigan | 0.82 | 0.032 | 0.83 | 0.033 |
| Minnesota | 0.70 | 0.053 | 0.71 | 0.052 |
| Mississippi | 0.81 | 0.038 | 0.72 | 0.049 |
| Missouri | 0.76 | 0.042 | 0.54 | 0.064 |
| Montana | 0.73 | 0.056 | 0.79 | 0.037 |
| Nebraska | 0.74 | 0.049 | 0.81 | 0.037 |
| Nevada | 0.77 | 0.043 | 0.79 | 0.039 |
| New Hampshire | 0.73 | 0.028 | 0.83 | 0.019 |
| New Jersey | 0.82 | 0.042 | 0.84 | 0.027 |
| New Mexico | 0.72 | 0.055 | 0.75 | 0.038 |
| New York | 0.85 | 0.027 | 0.84 | 0.029 |
| North Carolina | 0.78 | 0.040 | 0.78 | 0.038 |
| North Dakota | 0.63 | 0.048 | 0.67 | 0.051 |
| Ohio | 0.66 | 0.081 | 0.35 | 0.084 |
| Oklahoma | 0.64 | 0.075 | 0.66 | 0.059 |
| Oregon | 0.69 | 0.056 | 0.60 | 0.074 |
| Pennsylvania | 0.84 | 0.028 | 0.87 | 0.023 |
| Rhode Island | 0.73 | 0.028 | 0.83 | 0.019 |
| South Carolina | 0.68 | 0.054 | 0.67 | 0.059 |
| South Dakota | 0.64 | 0.067 | 0.80 | 0.037 |
| Tennessee | 0.80 | 0.037 | 0.54 | 0.082 |
| Texas | 0.82 | 0.029 | 0.71 | 0.050 |
| Utah | 0.52 | 0.085 | 0.73 | 0.042 |
| Vermont | 0.73 | 0.028 | 0.83 | 0.019 |
| Virginia | 0.72 | 0.043 | – | † |
| Washington | 0.71 | 0.046 | 0.68 | 0.059 |
| West Virginia | 0.54 | 0.093 | 0.66 | 0.063 |
| Wisconsin | 0.77 | 0.044 | 0.84 | 0.034 |
| Wyoming | 0.59 | 0.079 | 0.72 | 0.062 |
| – Not available. California and Virginia do not assess general mathematics in grade 8. | ||||
| † Not applicable. | ||||
| SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2013 Reading and Mathematics Assessments. | ||||