The UK failed to make the top 20 in any of the three subjects in international tests taken by 15-year-olds.
In 2009, the UK placed 16th in science, but this year only made it to number 21. However, the pupils' performance in maths and reading has improved.
- In 2009, the UK placed 25th for reading, today this rose to 23rd
- In 2009, the UK placed 16th in science, today this fell to 21st
- In 2009, the UK placed 28th in maths, today this rose to 26th
More top news
Startled Mohammed Asif leapt from the first-floor of his home in Smethwick, Birmingham, as officers stormed his property.
Tens of thousands of people paid their respects at a full state funeral for Romania's King who was deposed by Communists in 1947.
Remaining cold for most this weekend with the risk of ice overnight