Almost a quarter of young people are now supplementing their school work with private tuition, according to a survey by education charity The Sutton Trust.
It reveals that 24 percent of 11 to 16-year-olds in England and Wales say their parents have hired a private or home tutor for them at some point in their school careers.
This is up from 23% who said the same last year, and 18% in 2005.
The survey questioned 2,595 pupils in England and Wales between 1 February and 19 April.
More top news
Phil Rudd also pleaded guilty to possessing crystal meth and marijuana in a New Zealand court.
Ed Miliband will order an emergency recruitment drive of nurses so an extra 20,000 will be working in the NHS by 2020.
Sir John will give a speech later today saying a Labour-SNP government would be "weak and unstable" and wreck Britain's economic recovery.