Does future anticipated fertility aﬀect educational investment? Theory suggests that the number of children planned in the future can aﬀect the returns to education, the resources available for family consumption and the incentives to ﬁnd a partner. This paper uses varying eligibility criteria for second child permits during the One-Child Policy in China as a natural experiment, which provides plausible exogenous variation in the cost of the second child. I use second child permits that are conditional on time-invariant individual characteristics and show that they have a strong positive eﬀect on the likelihood of having a second child between 1990 and 2005. They are therefore expected to change anticipated fertility among compliers. I ﬁnd that fulﬁlling an eligibility criterion at secondary school age increases the time invested in education and the likelihood of continuing schooling after middle school. The eﬀect appears concentrated in the subset of compliers: individuals who increase their anticipated number of children as a response to eligibility. It can be explained by the high cost of raising children, by the second child having at most a short-term eﬀect on parental labour supply and by concerns about ﬁnding a spouse.