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
Patients are being left "belittled and bewildered" as medical staff try to deal with overstretched systems, the BMA will warn.
One tenant confronted the leader of Camden Council as tensions rise in evacuation of Chalcots estate.
The teenager, who cannot be named for legal reasons, is alleged to have attacked the girl in a Manchester park on Saturday evening.