The Welsh Bacc was introduced in 2002 to give teenagers a more rounded education.

BBC: Wales politics

However, some schools are sticking to the shorter course, believing undergraduates should have a more rounded education.

CNN: Starting out young

As well as academic tests, there will be questions on how much pupils enjoy their schools and their classroom environment, with the aim of producing a more rounded picture of the quality of education.

BBC: Schools can measure themselves against Pisa tests