A review of the English exams system proposes a new four-tier diploma to replace GCSEs and A-levels, according to the BBC.

Students would also be able to take exams earlier or later rather than at fixed ages. This could allow bright schoolchildren to begin university degrees as early as the age of 16. The diploma would have four levels in order to include the achievements of all pupils.

The review, carried out by the former chief inspector of schools, Mike Tomlinson, is out on Tuesday.

GCSEs and A-levels would become component parts of the diploma rather than stand-alone qualifications. Vocational qualifications and extra-curricular activities would also go towards the diploma. Students woulc also be able to bypass AS-levels and go straight to A-level if they want.

The review will also contain an examination of the grading procedure for A-level, following criticism. Some universities have said they needed to carry out their own tests to distinguish between A-grade candidates for courses such as law or medicine.

The report will also place less emphasis on coursework but will suggest an extended essay as part of the diploma.