Actress Penelope Cruz, star of director Woody Allen's new film "Vicky Cristina Barcelona", poses at the film's premiere in Los Angeles August 4, 2008. [Agencies]

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Penelope Cruz doesn't understand how she passed her school exams because she never studied. The 'Vicky Cristina Barcelona' actress - who is reportedly engaged to actor Javier Bardem - was stunned with her high school success because she never applied herself in class.

She said: "I was good in school, but I was surprised because I didn't put too much time in studying. I was always dreaming about the things I wanted to do when I was older, like acting. I still don't know why or how I passed, because I literally put no time in."

Penelope, who locks lips with Scarlett Johansson in Woody Allen's new movie, insists she liked going to school and learning new things.

She added: "I did actually enjoy every subject. Except mathematics!" The 34-year-old Spanish beauty recently revealed she struggles to control her "inner beast", who threatens to ruin any achievements in her life.

She explained: "I'm always finding very tricky and hidden ways to sabotage any beautiful moment. And it's something so internal that I don't think even my friends or family can catch me doing it."