Tani, Massimiliano; Zhu, Yu; Xu, Lei - 2021
which the central government mandated urban public schools to exempt migrant children from tuition and temporary schooling … distinguish migrant children who started urban schooling before and after 2008 as separate treatment groups of always-takers and … treatment effect of the policy on migrant children is around 0.18 SD, as measured by a standardised cognitive test score – a …