In this study the research team uses a nationwide sample of high school students from Chile to investigate how these factors interact on a systemic level. Confirming prior research, they find that family income is a strong predictor of achievement. Extending prior research, they find that a growth mindset (the belief that intelligence is not fixed and can be developed) is a comparably strong predictor of achievement and that it exhibits a positive relationship with achievement across all of the socioeconomic strata in the country. Furthermore, they find that students from lower-income families were less likely to hold a growth mindset than their wealthier peers, but those who did hold a growth mindset were appreciably buffered against the deleterious effects of poverty on achievement. These results suggest that students’ mindsets may temper or exacerbate the effects of economic disadvantage on a systemic level.