There's no single "smartest" country, but East Asian nations like Singapore, China, Japan, South Korea, and Hong Kong consistently rank highest in international education assessments (PISA) for math, reading, and science, while Japan leads in average IQ scores, with other high scorers including Taiwan, Singapore, and European nations like Estonia, Finland, and Germany. These countries often emphasize rigorous education, STEM, and high parental investment, leading to top performance in standardized tests and research output.
Smartest Students Based on IQ
Australia ranks highly globally for education, particularly in higher education where its system is considered third strongest (after the US & UK), with many universities in top 100/50 subject rankings. For K-12, Australian students perform well in PISA tests, ranking in the top 10 for reading, science, and math in recent assessments, though system-wide proficiency varies, notes the ABC News. Overall, Australia is a top destination for international students and boasts a highly educated population, per the Australian Government DFAT and Secret Brisbane.
Finland: home to the smartest kids in the world
Leaders in Higher Education
Canada tops the list with nearly 65% of adults holding a college or university degree, followed closely by Ireland and South Korea.
Top 20 Best Education Systems in the World
Massachusetts. Massachusetts, known for its top colleges like MIT and Harvard, ranks as the most educated state in America. The state has the highest percentage of adults ages 25 and older with at least a Bachelor's degree, at nearly 47%, and the highest share who have a graduate or professional degree, at over 21%.
Japan ranks highest in average IQ globally, with an average IQ score of 106.48, according to recently updated data from DataPandas on May 20, 2025. National IQ is influenced by factors such as education, healthcare, nutrition, and economic stability.
Amsterdam in the Netherlands. These kinds of comings and goings aren't unique to their family. Many Dutch children enjoy a freedom of movement that most American kids don't, which might be the key to why Dutch kids are the happiest kids in the world, according to a 2025 UNICEF report.
After examining 20,000 people, researchers from the University of Leipzig concluded that older siblings are smarter on average while younger siblings are healthier and are more likely to be gay (if they're men).
Australia vs USA University Quality & Global Rankings
According to the QS World University Rankings and Times Higher Education, the USA consistently places more universities in the top 100 and top 10 globally, reflecting its strong reputation for research output and academic excellence.
What is the rank 1 school in Australia? The top-ranked school in Australia can vary, but academically, Sydney Grammar School in New South Wales is often at the top due to its outstanding results in both ATAR and IB exams.
82% of adults aged 25-64 have completed upper secondary education in the UK, but score higher than Australia for their reading literacy, maths and science scores of 503. If we look at universities, the UK has more in the top 10 globally, like Oxford and Cambridge, but Australia has many top-100 universities.
Best Countries for Raising Kids
What's it about? Ten-year-old Joe Smith becomes the most average kid in the country and receives endless gifts and special treatment, making him question if being extraordinary is all it's cracked up to be.
Ranking of the least happy countries worldwide 2024, by score. Afghanistan was ranked the least happy country in the world, according to the World Happiness Report from 2025. The country scored only 1.36 on a scale from 0 to 10.
There is no evidence that he ever took an IQ test. However, that has not stopped some people from trying to determine how smart he was. According to some sources, Einstein's IQ was probably about 160, which is commonly considered genius level. This number is largely derived from his achievements in physics.
Careers in the medical field, computer programing, university research positions, and engineering are among the ones with the highest requirements to be smart and have a high IQ.
ACT is ranked the most educated state or territory based on percentage, although as the largest state in Australia NSW still has largest actual number of persons with a Bachelor degree or higher.
Overall, 90.3% of Americans over the age of 25 had graduated from high school in 2021, with the highest level found in the state of Massachusetts at 96.1% and the lowest in the state of California at 84.4%.
Based on the OECD's data for 2022, Canada is the most educated country globally, with 63% of adults meeting the OECD criteria. Japan has the second-highest percentage of 56%, followed by Ireland with 54%.