We study the determinants of math achievement among children in early elementary school using data from a unique experiment. We find steep socioeconomic gradients and a substantial boy-girl gap in math test scores. However, among children of mothers with university education, there is no...

We study the determinants of math achievement among children in early elementary school using data from a unique experiment in which children were randomly assigned to classrooms within schools for four consecutive grades. As a result, each child in our sample was exposed to four separate,...