Promise Effects on Credits Attempted
| Method | OLS | RF | IV |
|---|---|---|---|
| (1) | (2) | (3) | |
| Panel A: Credits Attempted at Two Years | |||
| (Mean of DV | After =0, Elig. =1) =25.00 | |||
| After ×Eligible | 3.236** | 0.972 | 1.408 |
| [1.646] | [1.563] | [2.265] | |
| R2 | 0.202 | 0.199 | 0.199 |
| N | 4,902 | 4,902 | 4,902 |
| p-value of difference between (1) and (3) | 0.503 | ||
| Panel B: Credits Attempted at Three Years | |||
| (Mean of DV | After =0, Elig. =1) =36.11 | |||
| After × Eligible | 4.309* | 1.332 | 1.961 |
| [2.468] | [2.319] | [3.414] | |
| R2 | 0.215 | 0.212 | 0.212 |
| N | 4,376 | 4,376 | 4,376 |
| p-value of difference between (1) and (3) | 0.588 | ||
| Panel C: Credits Attempted at 4 Years | |||
| (Mean of DV | After =0, Elig. =1) =46.59 | |||
| After × Eligible | 6.562* | 2.486 | 3.630 |
| [3.359] | [3.169] | [4.627] | |
| R2 | 0.209 | 0.207 | 0.207 |
| N | 3,869 | 3,869 | 3,869 |
| p-value of difference between (1) and (3) | 0.605 |
↵Notes: Standard errors robust to heteroskedasticity are in brackets. *p < 0.10, **p < 0.05, ***p < 0.01. Outcome timing is since high school graduation. Regressions include dummies for after the Promise, individual (pseudo-)eligibility, sex, race/ethnicity, free/reduced-price lunch status, and high school of graduation-by-graduation year. The mean of the dependent variable is for eligibles in the pre-Promise period. In Column 1, prior to 2006, eligibility is based on Promise rules had the Promise been in effect at the time (rules-based eligibility). After 2006, eligibility is taken from Promise administrative records (observed eligibility). Column 2 always uses rules-based eligibility. Column 3 rescales Column 2 by the first-stage coefficient. This first- stage coefficient is obtained, for the post-Promise period, by regressing observed eligibility on rules-based eligibility (and the same covariates as above). The first-stage coefficient in Panel A is 0.690, 0.679 in Panel B, and 0.685 in Panel C; see Appendix Table A.5, Columns 2–4. The first-stage F-test statistic is 1,153 in Panel A, 953 in Panel B, and 819 in Panel C. The p-values are from a Hausman test of equality of the OLS and IV estimate.