Although previous research has noted the detrimental impact of parents' marital disruption on children's schooling, less is known about whether such detriments are observable prior to the disruption. Based on two waves of a nationally representative longitudinal data set, this study has found that even prior to family dissolution, both boys and girls from families that subsequently dissolve perform less well than their peers whose parents remain married. Families at the predisruption stage are also characterized by a shortage of financial, cultural, human, and social capital, even after demographics are controlled. In addition, some parental investment measures yield a smaller educational return for students whose families subsequently dissolve than for those whose parents remain married. Our results also indicate that the negative postdisruption effects on children's academic achievement can be either largely or completely predicted by performance and investment differences at the predisruption stage.