
| Characteristic | Multiplication and division |
Place value |
Rate and measurement |
Fractions |
Area and volume |
| Total | 0.47 | 0.96 | 1.04 | 0.63 | 0.14 |
| Child’s sex | |||||
| Male | 0.58 | 1.12 | 1.29 | 0.92 | 0.22 |
| Female | 0.66 | 1.32 | 1.40 | 0.80 | 0.14 |
| Child’s race/ethnicity | |||||
| White | 0.49 | 1.18 | 1.48 | 1.09 | 0.24 |
| Black | 1.54 | 1.92 | 1.50 | 0.69 | 0.16 |
| Hispanic | 0.63 | 1.22 | 1.53 | 0.79 | 0.10 |
| Asian | 1.06 | 1.97 | 2.52 | 1.98 | 0.56 |
| Other | 3.22 | 5.78 | 4.76 | 2.68 | 0.32 |
| Mother’s highest level of education, spring 2004 | |||||
| Less than high school | 1.78 | 2.52 | 1.56 | 0.57 | 0.15 |
| High school diploma or equivalent | 0.85 | 1.41 | 1.50 | 0.78 | 0.15 |
| Some college or vocational technical degree | 0.59 | 1.37 | 1.51 | 0.90 | 0.18 |
| Bachelor’s degree or higher | 0.28 | 0.91 | 1.69 | 1.92 | 0.45 |
| Primary home language at kindergarten entry | |||||
| English | 0.52 | 1.07 | 1.17 | 0.75 | 0.16 |
| Not English | 1.01 | 1.66 | 1.74 | 1.02 | 0.18 |
| School type, spring 2004 | |||||
| Public | 0.51 | 1.06 | 1.12 | 0.66 | 0.15 |
| Private | 0.97 | 2.12 | 2.64 | 1.99 | 0.36 |
| Poverty status, kindergarten through spring 2004 | |||||
| Below, all rounds | 1.82 | 2.35 | 1.70 | 1.06 | 0.08 |
| In and out of poverty | 1.06 | 1.91 | 1.77 | 0.71 | 0.08 |
| At or above, all rounds | 0.43 | 0.97 | 1.33 | 1.00 | 0.24 |
| Family type, kindergarten through spring 2004 | |||||
| Two parents, all rounds | 0.43 | 0.99 | 1.39 | 0.98 | 0.23 |
| Single parent, all rounds | 1.56 | 2.64 | 2.47 | 1.43 | 0.37 |
| Other, all rounds | 8.13 | 9.08 | 5.36 | 1.35 | 0.06 |
| Change in family type | 1.07 | 1.94 | 1.85 | 1.06 | 0.25 |
| School type, kindergarten through spring 2004 | |||||
| Public school, all rounds | 0.53 | 1.10 | 1.23 | 0.70 | 0.14 |
| Private school, all rounds | 0.27 | 1.35 | 1.99 | 1.57 | 0.34 |
| Change in school type | 1.02 | 2.28 | 2.95 | 2.85 | 0.42 |
| Grade level of child, spring 2004 | |||||
| Below grade level | 1.78 | 3.05 | 2.34 | 1.34 | 0.13 |
| Fifth grade | 0.44 | 1.05 | 1.23 | 0.74 | 0.16 |
| Above grade level | 0.20 | 2.11 | 12.97 | 20.60 | 4.84 |
| SOURCE: U.S. Department of Education, National Center for Education Statistics, Early Childhood Longitudinal Study, Kindergarten Class of 1998–99 (ECLS-K), Longitudinal Kindergarten–Third Grade Public-Use Data File, and Fifth-Grade Restricted-Use Data File. |
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