Appendices Table B.10: Robustness check of the regression results of sixth-grade skill scores on first-grade skill scores with no missing category for parental education. SKILLG6 Reading Spelling Math SKILLG1 .454*** .421*** .526*** (.006) (.006) (.006) Parental education (Middle=ref.) Low-educated -.090*** -.018 -.074*** (.021) (.021) (.020) High-educated .367*** .178*** .288*** (.012) (.013) (.012) Constant .853*** 1.640*** 1.829*** (.295) (.519) (.217) Observations 25,050 25,050 25,050 R-squared .414 .335 .482 Note. SKILLG1 andSKILLG6 refer to the standardized skill scores in grades one and six, respectively. Additional unreported student characteristics include age, sex, migration background, household type, and family size. We also include a control for grade retention, a covid dummy, and school and year FE. Robust standard errors are displayed in parentheses. *** p< .01, ** p< .05, * p< .1. 214
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