Table A.5.
Changes in search intensity, by socioeconomic status quartile.
| School- | Parent- | |||
|---|---|---|---|---|
| centered | centered | Khan | ||
| resources | resources | Classroom | Academy | |
| (1) | (2) | (3) | (4) | |
| Post-Covid * Top SES quartile | 0.87*** | 0.54*** | 1.07*** | 0.57*** |
| (0.13) | (0.03) | (0.13) | (0.06) | |
| Post-Covid * 3rd SES quartile | 0.55*** | 0.38*** | 0.78*** | 0.44*** |
| (0.09) | (0.04) | (0.07) | (0.05) | |
| Post-Covid * 2nd SES quartile | 0.39*** | 0.31*** | 0.72*** | 0.43*** |
| (0.07) | (0.02) | (0.11) | (0.04) | |
| Post-Covid * Bottom SES quartile | 0.23*** | 0.14*** | 0.46*** | 0.21*** |
| (0.06) | (0.02) | (0.06) | (0.04) | |
| Top SES quartile | −0.17** | −0.11** | −0.15 | 0.01 |
| (0.08) | (0.04) | (0.11) | (0.06) | |
| 3rd SES quartile | 0.06 | −0.09* | −0.03 | 0.01 |
| (0.06) | (0.05) | (0.12) | (0.09) | |
| 2nd SES quartile | −0.14* | −0.22*** | −0.37** | −0.07 |
| (0.08) | (0.07) | (0.14) | (0.05) | |
| N | 50,400 | 50,400 | 50,400 | 50,400 |
Notes: Heteroskedasticity robust standard errors clustered by DMA are in parentheses (* p < .10 ** p < .05 *** p < .01). Each column regresses the logarithm of DMA-level search intensity for the listed topic on a post-March 1 indicator interacted with indicators for each DMA’s SES quartile, as well as directly including those SES quartile indicators. The regressions are weighted by DMA population and include fixed effects for week of year (1–52) and school year (2015–2020). The sample contains search data from June 2015 through May 2020, excluding March 2020 and weeks with major school holidays.