The Avengers director Joss Whedon hated the time he spent at a posh English school as a youngster, insisting he "wouldn't wish it on a dog".

The Buffy The Vampire Slayer creator spent two years studying at a private college in Winchester, England after moving to Britain with his mother in the aftermath of his parents' split.

Whedon admits he had a miserable time at the boys school and struggled with his education.

He tells Britain's Sunday Express, "It (the school in England) was nuts. I wouldn't wish it on a dog... I was not a very good student. I had many problems that they have acronyms for now that they didn't then, so that was a struggle.

"Also I was a disaffected, alienated teen who just wanted to make movies. But even while I was utterly miserable I knew what a wonderful school it was. I would be like, 'I am miserable in the most beautiful place'."

However, Whedon insists the exprience did him good: "I wouldn't trade it for the world... I had great teachers, including my English A-level (exam) teachers who really gave me Shakespeare as nobody ever had."