Table 3-5. Characteristics of treatments versus controls, cohort 2 impact sample
| Grade-band/characteristics | Treatments | Controls | Difference |
|---|---|---|---|
| K–5 | |||
| Percent African American | 95.0 | 92.3 | 2.7 |
| Percent missing | 9 | 7 | |
| Percent Hispanic (any race) | 11.1 | 9.3 | 1.8 |
| Percent missing | 6 | 7 | |
| Percent Female | 50.7 | 53.4 | -2.7 |
| Percent missing | 0 | 0 | |
| Average annual family income | 15,872 | 17,159 | -1,287* |
| Percent missing | 0 | 0 | |
| Average years of mother's education | 12.6 | 12.7 | -0.1** |
| Percent missing | 15 | 14 | |
| Sample size | 749 | 429 | |
| 6–8 | |||
| Percent African American | 93.2 | 92.3 | 0.9 |
| Percent missing | 10 | 10 | |
| Percent Hispanic (any race) | 15.8 | 12.6 | 3.2 |
| Percent missing | 8 | 5 | |
| Percent Female | 48.6 | 54.5 | -5.9 |
| Percent missing | 0 | 0 | |
| Average annual family income | 18,296 | 17,232 | 1,064 |
| Percent missing | 0 | 0 | |
| Average years of mother's education | 12.5 | 12.4 | 0.1 |
| Percent missing | 19 | 11 | |
| Sample size | 247 | 134 | |
| 9–12 | |||
| Percent African American | 92.8 | 93.6 | -0.8 |
| Percent missing | 10 | 5 | |
| Percent Hispanic (any race) | 11.0 | 6.7 | 4.3 |
| Percent missing | 11 | 10 | |
| Percent Female | 44.6 | 46.7 | -2.1 |
| Percent missing | 0 | 0 | |
| Average annual family income | 18,577 | 18,431 | 146 |
| Percent missing | 0 | 0 | |
| Average years of mother's education | 12.5 | 12.7 | -0.2 |
| Percent missing | 21 | 21 | |
| Sample size | 92 | 165 | |
|
* Statistically significant at the 95 percent confidence level. ** Statistically significant at the 99 percent confidence level. |
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| NOTES: The DC Opportunity Scholarship Program applications and the Program operator's files. | |||