This paper investigates the spillover effects of siblings growing up with a brother or sister diagnosed with a chronic disease. I focus on the effect of having a sibling diagnosed with low birth weight on outcomes measuring educational attainment and achievement. The empirical analysis draws on data from the ’NLSY79 Child and Youth Survey’ and I find evidence of a significant negative effect on the likelihood of attending college at a magnitude of around 12 percentage points. The estimated effects on educational achievement are more ambiguous and non-robust. However, the lions’ share of the point estimates is in line with what is found in previous com- parable research
