Where your DNA places you among other people, and the studies behind it.
Not tailored to your result, and not medical advice
Treat Education Genetics With Caution: The largest genome-wide study of educational attainment, covering just over 3 million people, produced a polygenic index that explains roughly 12 to 16 percent of the variation in years of schooling. When the same index was compared within families, its direct effect was about 0.56 of its population effect, implying that only around 31 percent of its predictive power comes from a person's own inherited variants. The remainder reflects indirect genetic effects such as the environment parents provide, along with assortative mating and population structure. Years of schooling is shaped heavily by family and social circumstances, and its genetic signal is weaker and more indirect than that for physical traits such as height. Nature Genetics (PMC)
Keep Learning For Longer: A meta-analysis of 42 datasets and more than 600,000 participants pooled 142 effect sizes from three study designs: changes to compulsory schooling policy, school entry age cutoffs, and longitudinal studies that controlled for earlier measured ability. Each additional year of education was associated with a gain of roughly 1 to 5 IQ points depending on the design. Effects remained statistically detectable into the eighth and ninth decades of life, though in the designs that controlled for prior ability they shrank gradually with age. The authors described education as the most consistent, robust and durable method yet identified for raising intelligence. Psychological Science (PMC)
Protect Sleep In School Years: Body clocks shift later at puberty, so early school start times cut sleep off at the end of the night, when REM sleep is concentrated. A review of school start time research found that even delays of about half an hour increased sleep duration, and that later start times generally corresponded to better attendance, less tardiness, less falling asleep in class and fewer depressive symptoms. Effects on test scores were smaller and less consistent: one large North Carolina district reported gains on the order of 2 to 3 percentile points in mathematics and reading for a start an hour later, while several other analyses found no association at all. The sleep, mood and attendance findings are the better supported part of this picture. Journal of School Health (PMC)
Reduce Early Lead Exposure: Lead exposure in early childhood is associated with lower school test scores at concentrations once considered acceptable. In a North Carolina study linking early childhood blood lead measurements to end-of-grade exams, a blood lead level of 5 micrograms per decilitre was associated with reading and mathematics scores roughly 15 and 14 percent of an interquartile range lower, with a discernible impact from levels as low as 2 micrograms per decilitre. The decline was steeper at the lower end of the range than the higher end, so no exposure band looked clearly safe, and a level of 4 micrograms per decilitre carried an impact about 90 percent as large as free or reduced-price lunch eligibility, the standard poverty marker in school data. Older paint, lead service lines and some imported goods remain common household sources. Environmental Health Perspectives (PMC)
Limit Traffic Pollution Exposure: A prospective study followed 2,715 children at 39 Barcelona primary schools for 12 months and compared schools with high and low traffic-related air pollution. Working memory improved by 11.5 percent over the year at the low-pollution schools against 7.4 percent at the high-pollution schools, and children at the more polluted schools also showed smaller improvements in attention. A change from the lowest to the highest quartile of measured indoor elemental carbon was associated with a 13 percent reduction in working memory gain. The associations held after adjustment for maternal education, socioeconomic status and air pollution at home, but the design is observational and cannot establish cause. PLoS Medicine (PMC)
How much of this is genetic?
Genetics explains 40% of why people differ in this trait. The rest is environment, daily habits and chance.
Heritability estimate: Branigan et al. 2013, Social Forces (twin meta-analysis); SNP-based estimates are lower (~11-13%, Lee et al. 2018, Nature Genetics)
Background and further reading
Educational attainment usually means the number of years of formal schooling a person completes, or the highest qualification they reach. It is one of the most-studied traits in social-science genetics, mainly because years of education are recorded for very large numbers of people, which makes huge genetic studies possible. It is important to be clear about what this trait is not: it is not a test of intelligence, talent, or worth, and it does not predict what any individual can achieve. How far someone goes in school is shaped overwhelmingly by family circumstances, schooling quality, health, opportunity, culture, and personal choice. A polygenic score captures only a faint statistical echo of that complex picture.
Genetic Basis: Educational attainment is extraordinarily polygenic. Rather than a few influential genes, it reflects the tiny combined effects of thousands to millions of common variants, no single one of which matters much on its own. The landmark genome-wide studies of more than one million and later three million people found that the variants involved are concentrated near genes expressed in brain tissue and active during neural development, consistent with the trait's partial link to cognition and behavior. Even so, the best genetic score built from these studies explains only around a tenth of the differences in years of education across a population, and it works far better at comparing broad groups than at predicting any one person.
Environmental and Interpretive Factors: This is a trait where genetic prediction must be read with unusual caution. A large part of what a polygenic score appears to predict is actually the environment that tends to travel alongside genes within families and communities, sometimes called genetic nurture, together with the effects of ancestry and social structure. When researchers compare siblings raised in the same home, the predictive power of the score drops by roughly half, showing how much of the apparent signal reflects environment rather than a direct biological effect. Scores were also derived mostly in people of European ancestry and lose accuracy in other populations. For all these reasons, an educational-attainment score is best treated as an interesting research readout about population-level patterns, never as a statement about a person's ability or future.
The published research behind your score, and the variants it draws on.
10 published scores from 3 studies
The educational attainment score combines 10 polygenic scores drawn from 3 published studies.
These traits are influenced by some of the same genes and variants as this one
Height: Adult standing height - one of the most heritable and polygenic human traits.
Content updated August 2026.
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