Lauren Marbe, 16, shocked teachers by scoring 161 on the Mensa brain test after she was entered with other pupils from her school for fun.
The “normal” teenager is the daughter of a black cab driver and dreams of one day being a performer in the West End.
But her remarkable brain test score means she is now officially smarter than Professor Stephen Hawking, Bill Gates and even Albert Einstein – who all have an IQ of 160.
Miss Marbe has now been enrolled in prestigious society Mensa, which means she is officially in the top one per cent of cleverest people in the world.
The schoolgirl, who is already predicted straight A’s and A*’s for her GCSE’s, said she was delighted to have “blown away” the Essex stereotype.
Miss Marbe, of Loughton, Essex, said: “It was such an achievement and I got a bit tearful to tell you the truth.”
The teenager said her parents were surprised at the result.
Lauren, a pupil at Roding Valley High School, Loughton, Essex, took the Mensa-accredited IQ test earlier this month along with other high achievers at her school.
The dedicated pupil – head girl of her primary school and currently a prefect – was already considered bright after scoring a double A* in her science GCSE, which she took a year early.
She is now aiming to take A-Levels in art, physics and maths after her GCSEs, this summer, and would love to study architecture degree at the University of Cambridge.
But she admits she is torn between her academic ability and pursuing her dream of becoming a professional singer.
Lauren, who lives with her family in a £350,000 semi-detached house, still takes singing lessons, records music and takes part in Stage One drama school.
Her proud parents, father David, 45, and Sue Marbe, 45, deputy head of a primary school, say they will be happy whichever path their daughter chooses.
The couple also admitted they have no idea where her brains come from.
Mrs Marbe said: “Living in this area there is a lot of pressure to be the stereotypical Essex girl but she has a real nice support from the other girls.
Einstein never took an IQ test as none of the modern intelligence tests existed during the course of his life, but experts believe he had an IQ of around 160.
The IQ test is designed to test a range of abilities to determine the level of intelligence of the student – in the UK the average score is 100.
Source: THE TELEGRAPH