This dissertation consists of three empirical essays on human capital investment issues in China. The first essay examines the trade-off between child quantity and quality in rural China, exploiting a source of exogenous variation in family size generated by the temporary relaxation in China’s one-child policy in the mid-1980s. The relaxed population policy allowed a rural couple to have a second child if the first-born was a girl. Exploiting this policy change, this essay creates IVs for family size from the sex-composition of the first two children in a family. The IV results indicate that rural parents hardly face a trade-off between child quantity and quality, at least in terms of their monetary investments in children’s education. Thes...