Nguyen, HieuLewis, Blane2023-04-030167-5923http://hdl.handle.net/1885/288015This paper examines the impact of school starting age on teenage marriage and motherhood in Vietnam. The investigation uses data from the 2009 Vietnam Population and Housing Census and regression discontinuity methods to identify the causal efects of school starting age on teenage marriage—a frst in the literature—and early motherhood. Results show that girls who start school earlier are more likely to marry and/or give birth as teenagers than their counterparts who begin school later. School starting age impacts are heterogeneous across girl subgroups. The deleterious efects of starting school early are particularly pronounced for teenage girls who are members of ethnic minorities, whose mothers have relatively less education, and whose households are relatively poor. Girls that fall into these subgroups are more likely to beneft from a delay in school entry. Government may wish to adopt a more fexible approach to its age at entry regulations to allow disadvantaged girls the option of starting school later.application/pdfen-AU© Springer Nature B.V. 2019Teenage marriageTeenage motherhoodSchool starting ageRegression discontinuityVietnam202010.1007/s11113-019-09553-y2022-01-16