How do countries compare for reading, maths and science performance? The latest Pisa results from the OECD show which countries are making the biggest improvements and which could do better.
Since 2000, the OECD has attempted to evaluate the knowledge and skills of 15-year olds across the world through its Pisa test. More than 510,000 students in 65 economies took part in the latest test, which covered maths, reading and science, with the main focus on maths - which the OECD state is a "strong predictor of participation in post-secondary education and future success."
The triennial results provide a wealth of data - from which countries are making the biggest improvements in education ranking to how the gender gap varies by subject.