Singapore and mainland China have topped a global student assessment, which was conducted by the OECD as part of its 2025 Programme for International Student Assessment. The assessment involved 760,000 15-year-old students from 91 countries and economies, including members and partners of the OECD. This is the largest number of participants since the OECD first administered the test in 2000. In mathematics, mainland China led with an average score of 612 points, while Singapore scored 563 points. In science, mainland China again topped the list with an average score of 597 points, followed closely by Singapore at 560 points. These scores are significantly higher than the OECD's average scores of 463 and 482 points in mathematics and science, respectively. The assessment also introduced a new computational problem-solving module to prepare students for the AI era.