The PISA Rankings, or Programme for International Student Assessment, is a worldwide study conducted by the OECD every three years. It evaluates the educational performance of 15-year-old students in reading, mathematics, and science across various countries. The results help governments and educators understand how well their education systems are performing compared to others. Countries are ranked based on their students' scores, providing insights into effective teaching methods and learning environments. The PISA Rankings aim to identify strengths and weaknesses in education systems, guiding policy decisions to improve student outcomes and overall educational quality.