Olivia Manning, from Liverpool, managed to get a whopping score in an IQ test of 162 - well above the 100 average.
Her score is not only two points better than genius German physicist Einstein and Professor Stephen Hawking, but puts her in the top one per cent of intelligent people in the world.
She has now been given the honour of being welcomed into Mensa - meaning she will join a network of brains from across the globe.
As a confirmed genius, Olivia is now getting celebrity status at her school - the North Liverpool Academy in Everton.
She said: ‘A lot more people are coming up to me asking for help with their homework. I just like challenges and making my mind think.’
Olivia, who lives on the Norris Green housing estate, admits to having a knack for quickly absorbing and remembering new information - but confessed to being ‘speechless’ when she discovered her score.
But despite outdoing the likes of TV mathematician Carol Vorderman, who could only muster 154, Olivia is set to put the stage before sums.
It helps that she barely needs a script – with the youngster revealing she learned her lines for a Macbeth production within 24 hours.
But Olivia – a member of her school’s Mensa after-school problem-solving club - will have plenty of her own work to do.
Teacher and club organiser Stacey Meighen joked: ‘We have given her extra work to do and will now want to know why she’s not getting As in everything.’
Also accepted into Mensa with a 151 score was 12-year-old Lauren Gannon, another Norris Green resident, putting her into the top two per cent of the population.
Principal Kay Askew said: ‘The success of the Mensa enrichment club shows how with the right support, students can excel and become the best in the world.