Ofsted have warned that many of England's most able pupils are being failed by a culture of low expectations.
The report found that in non-selective schools, 65 per cent of pupils who achieved top levels in English and Maths in primary school did not gain an A or A* at GCSE.
The education watchdog called on schools to do more to challenge the minds of the brightest pupils and to consider streaming pupils when they first start secondary school.
ITV News reporter Martha Fairlie reports:
More top news
Sixteen Colombian police officers have been killed after their helicopter crashed while searching for the nation's most-wanted drug lord.
Two men have been arrested after a methamphetamine lab was discovered inside a Taco Bell restaurant in the US.
The Labour leadership contender has vowed to renationalise Britain's railway network "line-by-line" if he becomes prime minister.