Except in 'Education, Education, Education'.
UK countries have dropped out of the top 20 for the first time ever when compared to other nations. For the seventh largest global economy that has to be of some concern.
There are concerns, of course, thet the tests are flawed, and they may be right. There is evidence that some countries teach to the test, which is a bit of a cheat. If pupils are given a good grounding in a subject that should not be necessary. and there's the rub.
This link: http://www.oecd.org/pisa/test/ leads to six sample questions. Have a go, and remember that these are being answered by 15 yr-olds, those about to take GCSE. Take a good look at what the UK scored for each question.
Are you shocked? I am. Only 3% of our puils could work out a simple average speed. Maths my @r5e, these are simple arithmetic.