Kirsten Stewart left school aged 14 as she ''couldn't relate'' to those her own age.

The "Twilight" actress had already embarked on a fledgling movie career by the time she was a teenager, and was relieved her parents allowed switch to home schooling after she started to get given a hard time by other children.

She said: "I was glad to leave school. I couldn't relate to kids my own age. They are mean and don't give you any chance."

"When I was there, I was never the type of girl to be walking around talking about acting, so I didn't get a whole lot of hassle, until someone found out, until someone saw some old movie and realized. I was trying to play it down."

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"But I definitely got, 'Oh, she's such a b***h.' They'd never spoken to me, but instantly they were, like, 'You are so rude.' I am not rude."

The 19-year-old star – who plays the lead role of Bella Swan, who falls in love with a vampire in "Twilight"- also said she has always felt older in her mind that she has been physically.

She added: "I felt I should have been an adult at the age of five. And I thought I was an adult when I was 12."

"I wasn't like a warrior, but I have never been that kid who doesn't care a fig about anything. It's just the way I've been brought up."

"The Twilight Saga: New Moon" - the second film in the series – also starring Robert Pattinson, will be released in November this year.