The indicator represents the PISA (Programme for International Student Assessment) test results of 15 year old school students in 65 participating countries, organised by OECD. The survey focuses on mathematics, with reading, science and problem-solving minor areas of assessment.
PISA results reveal what is possible in education by showing what students in the highest-performing and most
rapidly improving education systems can do. The findings allow policy makers around the world to gauge the
knowledge and skills of students in their own countries in comparison with those in other countries, set policy
targets against measurable goals achieved by other education systems, and learn from policies and practices