Private schools have taken advantage of the new A* A-level grade, with research revealing that nearly one-fifth of exams taken by students at fee-charging establishments this year being awarded the mark.
According to the Evening Standard, some 19 per cent of A-level papers from private and independent schools were given an A* this year, compared to just seven per cent nationally.
Data released by the Independent Schools Council also showed that 53 per cent of A-level entries from students at private institutions scored at least one A grade, compared with a national figure of 27 per cent.
At North London Collegiate School, the top independent school in the capital, students gained an average of 498 Ucas points, which is equal to three As and one A* grade for each pupil.
Matthew Burgess, deputy chief executive of the Independent Schools Council, said: "Once again, these excellent results reflect the hard work by many thousands of pupils and the excellent teaching in the independent sector."
However, the figures also suggested that many private schools are moving away from A-levels and are taking up the Pre-U exam, which some have said are more adequate for preparing students for university study.
Nearly 1,000 pupils took a Pre-U this year, while 1,805 opted for the International Baccalaureate.
Those in teaching jobs recently saw girls outperform boys as schools from across the country found out GCSE exam results last week (August 25th).
Some 26.5 per cent of girls were awarded an A or A* grade, while just 19.8 per cent of boys achieved the same result, indicating that the gender gap has widened to record levels.
The 6.7 per cent difference is the largest that has been seen since the A* grade was introduced in 1994.