Agree with the other Irish posters, it's crackers to me that DC specialise to such an extent at the age of 16. I think everyone should be studying some form of Maths, English, MFL and science until they leave school.
I agree with the idea of a basic level qualification that covers mathematical topics that are useful in day to day life - numeracy, basic stats, compound interest immediately come to mind.
On the flip side, I worked in a mathematical field within the financial services and came across more than one graduate who hadn't written an essay since their GCSEs, and boy did it show when they were asked to write a report.