Average IQ in Brazil: Score, Ranking & Analysis
Average IQ
87
Global Ranking
#105
out of ~199 countries
Region
South America
Important note: National average IQ scores are estimates based on limited sample sizes and vary across studies. These figures are heavily influenced by socioeconomic factors, access to quality education, healthcare, nutrition, and testing conditions. They do not reflect the intelligence or potential of any individual from that country. IQ scores measure specific cognitive skills and should be interpreted within their proper scientific context.
Education System in Brazil
Brazil has the largest education system in Latin America, serving over 50 million students. The Bolsa Família conditional cash transfer program significantly increased school attendance among low-income families. However, Brazil faces enormous challenges in education quality, with wide disparities between wealthy southeastern states and poorer northern and northeastern regions. PISA scores remain well below the OECD average. Brazil spends a relatively high percentage of GDP on education but struggles with efficiency.
To understand what IQ scores measure and how they're calculated, see our guide on what IQ is. For a breakdown of what different score levels mean, visit our IQ score ranges page.
Brazil Compared to South America
South America IQ Comparison
Here is how Brazil compares to other countries in South America that are included in our database:
| Country | Average IQ | Global Rank |
|---|---|---|
| Brazil | 87 | #105 |
| Argentina | 93 | #55 |
| Colombia | 89 | #85 |
| Bolivia | 87 | #89 |
| Ecuador | 89 | #90 |
| Peru | 85 | #91 |
Countries with Similar Rankings
These countries have similar average IQ scores and global rankings to Brazil:
| Country | Average IQ | Global Rank | Region |
|---|---|---|---|
| Jamaica | 71 | #95 | Caribbean |
| Sudan | 71 | #96 | Africa |
| Somalia | 68 | #97 | Africa |
| Libya | 83 | #98 | Africa |
| Zimbabwe | 72 | #99 | Africa |
Understanding IQ Distribution
It's crucial to remember that national averages represent the middle of a wide distribution. Within every country, individual IQ scores span the full range from below 70 to above 130 and beyond. A country with an average IQ of 87 will have many individuals scoring well above and below that number. Factors like socioeconomic status, nutrition, education quality, and access to healthcare play significant roles in cognitive development and test performance.
The Flynn Effect — the observation that IQ scores have risen substantially over time in many countries — suggests that environmental improvements like better nutrition, healthcare, and education access can significantly impact cognitive test performance at the population level. Many developing nations are experiencing rapid improvements in these areas.
Historical Context: IQ Trends in Brazil
Brazil's cognitive development reflects the persistent legacy of extreme inequality that has made it one of the most unequal countries in the world by income distribution. The abolition of slavery in 1888 — the last major country to do so — left a large Afro-Brazilian population with almost no educational infrastructure access for generations. Brazil's Flynn Effect through the late 20th century was significant in urban areas, driven by rapid industrialization and urbanization, but was counteracted by continued educational deprivation in rural Northeast Brazil and favelas. The Bolsa Família conditional cash transfer program (2003) linking poverty payments to school attendance measurably improved enrollment and cognitive outcomes for millions of children in the following decade.
Education System Deep Dive
Brazil's education system comprises 9 years of primary education (ensino fundamental) and 3 years of secondary (ensino médio), with the ENEM (National High School Exam) serving as both a secondary assessment and university admission pathway. Brazil scored 379 in PISA 2022 mathematics — below its Latin American neighbors Chile and Uruguay, and well below OECD average. Public universities are free and prestigious (USP, UNICAMP, UFRJ), but admission is extremely competitive; private universities serve the majority of students but vary widely in quality. Significant racial and income-based achievement gaps persist — Afro-Brazilian students score approximately 40 PISA points below white Brazilian peers. The PIBID teacher training program has sought to improve instruction quality. São Paulo and southern Brazilian states score substantially higher than Northeastern states.
Cognitive Achievements and Scientific Output
Brazil has produced Nobel Prizes in medicine (César Milstein's research was connected to Brazilian-trained immunologists) and literature. Brazilian mathematical physicist Jorge André Swieca made foundational contributions to quantum field theory. César Lattes's discovery of the pi meson at São Paulo and Bolivia's Chacaltaya laboratory in 1947 was a major early particle physics result. Brazilian ecologists and biologists produce internationally recognized research on Amazon deforestation, biodiversity, and climate dynamics — a field of global significance. INPE (Brazil's space research institute) is a globally recognized center for satellite remote sensing and climate modeling.
Frequently Asked Questions
What is the average IQ in Brazil?
Brazil's average IQ is estimated at 87, ranking #105 globally. This score reflects challenges in education quality across the country's vast and socioeconomically diverse population of over 210 million.
Why does Brazil score lower than some poorer countries?
Despite being a large economy, Brazil has extreme income inequality and vast regional disparities in education quality. The northeast and north regions have significantly lower educational outcomes than the south and southeast, pulling down the national average.
How does Brazil compare to Argentina?
Brazil (87) scores below Argentina (93). Argentina's smaller, more urbanized population, historically stronger public university system, and higher literacy rates contribute to the difference.
Explore More Countries
See the full list of all countries on our Average IQ by Country page, or take our free IQ test to see how you compare.
MyIQScores Editorial Team
Researchers in cognitive psychology, psychometrics & educational science
Last updated
May 10, 2026
All content on MyIQScores is reviewed for scientific accuracy against peer-reviewed research in cognitive psychology and psychometrics. Our editorial team cross-references each article with published literature before publication and updates pages whenever new research warrants a revision.