A Hermione-alike 13-year-old genius schoolgirl with a “perfect score” IQ of 162 showed her promise after acing the Tiffin Girls’ School entrance exam.

Neha Ramu, 13, said she was so shocked at her score her mother could not believe it.

She said: “I was really happy and really surprised at the same time, because I found the test really hard and I was not expecting to get into Mensa in the first place. “My mum was just as disbelieving as me.”

Neha, who lives with her family in Old Post Office Walk, Surbiton, said she loved to unwind by swimming, watching TV, and reading.

She is a huge fan of the Harry Potter books, especially the character Hermione.

Her perfect IQ score ranks her among the top 1 per cent of the UK’s most intelligent people.

Anyone with a score above 140 is considered to be a genius.

She said: “When I did my entrance exam to get into Tiffin I got 280 out of 280 on it.

“I did an American exam which 17-18 year-olds take, and I got 740 out of 800 in maths. My parents were then curious about my IQ.”

She said her parents, who are both opthalmologists, had inspired her.

But although she wants to become a doctor, she said she preferred neurology.

She said: “My parents have not really forced me to do anything. I was always given a choice.”

Her father, Muniraju Ramu, said they were very proud to hear about her IQ score.

He said: “It was unexpected, but we are very pleased she was able to get such a high mark.”

After moving to England from India aged just seven, she plans to make the move again in the future.

She said: “My dream university is Harvard, but I do not really mind as long as it helps me achieve my dreams.”