Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
From 1995 to 2015 the aggregate US college completion rate increased almost 50 percent, but completion trends differed markedly by family background. We consider whether changing college preparedness contributed to growth in aggregate completion and differences by family background. We first document parallel empirical trends in precollege investments, college preparedness, and completion. We use these moments to discipline a quantitative model of intergenerational human capital investment with heterogeneous families. Within the model, investment trends generate half of the empirical increase in college completion. The model implies that subsidizing precollege investments increases college completion and lifetime earnings more than college tuition subsidies.