Despite her young age, the score puts her in the top one percent of brightest people in the UK, which means she is more intelligent than Hawking, Bill Gates and even Einstein, who are all thought to have an IQ of 160.
Ramu's doctor parents, who lived in India before moving to Britain when their daughter was seven, had no idea their daughter was so gifted.
Although she had always performed well at school, it was only when she took an entrance exam for Tiffin Girls', a high-achieving grammar school, and achieved a perfect score of 280/280 that they realised her capabilities.
Two years later, she took the test for Mensa, a society for people with high IQs, and achieved the maximum possible score for someone aged under 18.
"I am so proud of her. Although she's being doing well at these kind of tests for sometime now this is just marvellous. I can't express the feeling," Neha's mother Jayashree said.
The score would be sufficient to get her into any Ivy League university.