Table 2.
Propensity Score weighted Regression Discontinuity results for the effects of Age 3 Head Start + Age 4 OK Pre-k vs. Age 3 Head Start + Age 4 Head Start
| Letter-Word | Applied Problems | Spelling | ||||
|---|---|---|---|---|---|---|
| B (se) | d | B(se) | d | B(se) | d | |
| Age 4 OK Pre-k & Age 3 HS effect (cutoff) | 3.77*** (1.03) | 0.69 (1.10) | 2.17*** (0.73) | |||
| Effect size | 0.92 | 0.14 | 0.68 | |||
| Age 4 HS & Age 3 HS effect (Pathway *cutoff + cutoff) | 1.88* (0.98) | 1.36 (1.06) | 1.72** (0.72) | |||
| Effect size | 0.46 | 0.27 | 0.53 | |||
| Age 4 HS & Age 3 HS differential effect (Pathway *cutoff) | -1.89** (0.88) | 0.66 (1.09) | -0.45 (0.69) | |||
| Effect size and direction of difference | -0.46 | +0.13 | -0.14 | |||
| p-value of difference | 0.02 | 0.54 | 0.51 | |||
| Covariates | ||||||
| Age 4 HS & Age 3 HS | 0.23 (0.53) | -0.40 (0.76) | 0.35 (0.45) | |||
| Age as distance from treatment cutoff | 0.0048* (0.0029) | 0.010*** (0.0029) | 0.0064*** (0.0020) | |||
| Age squared | 0.0000059 (0.0000097) | 0.0000080 (0.000010) | 0.00000063 (0.0000069) | |||
| Female | 0.68* (0.39) | 0.45 (0.44) | 0.82*** (0.29) | |||
| Child had some non-parental care at age 3 | 0.0014 (0.57) | 0.56 (0.73) | 0.40 (0.39) | |||
| Reduced-price lunch | -0.47 (0.77) | -1.86* (0.93) | -0.87 (0.72) | |||
| Maternal Education | ||||||
| Below High School | -0.67 (0.52) | 0.63 (0.60) | -0.077 (0.39) | |||
| Some college | 0.71 (0.57) | 1.42** (0.58) | 0.90** (0.45) | |||
| College + | 1.38 (0.88) | 1.99** (0.98) | 0.66 (0.57) | |||
| Child race | ||||||
| Black | 1.28** (0.61) | 1.02 (0.81) | 0.92* (0.47) | |||
| Hispanic | 0.41 (0.66) | 0.74 (0.82) | 1.94*** (0.58) | |||
| Asian/Native/Other | 0.53 (0.78) | 2.10** (0.97) | 0.44 (0.59) | |||
| Missing parent education | -0.22 (0.68) | -0.46 (0.73) | 0.17 (0.53) | |||
| Missing non-parental care | 1.19 (0.62) | 1.45** (0.66) | 0.60 (0.42) | |||
| Constant | 3.60*** (0.82) | 7.70*** (1.10) | 3.45*** (0.69) | |||
| Observations | 407 | 404 | 391 | |||
***
significant at .01 level,
**
significant at .05 level,
*
significant at .10 level.
Reference group for effect of exposure is age 4 OK Pre-k + age 3 Head Start . Observations that fall within the 270 day bandwidth from the treatment cutoff are included (Age-birthdate cutoff <= 270 in absolute value). Outcome variable is a raw score. All models use clustered SEs by teacher.