Half the A-levels taken by pupils at independent schools in the UK were graded A or A* this year, according to figures from the sector.
Almost one in five was awarded the new A* grade, says the Independent Schools Council, which represents the majority of independent schools in the UK.
Across state and private schools as a whole, 8% of A-level entries were graded A*, with 27% getting an A or A*.
About 6.5% of UK pupils go to private schools, rising to 18% among over-16s.