Katy Perry finds reading difficult.

The 'Firework' singer was brought up in a strict Christian household and didn't ''go to school much'' because her family moved around the US when she was younger, and her education suffered as a result.

She told US Vogue: ''I have a problem reading ... I wasn't going to great schools, because my parents didn't believe in public education. They wanted the education to be influenced by their religion, so I was going to these halfway education-slash-Christian schools that were like pop-up shop-style education.''

Katy - who moved back to Santa Barbara in California with her parents at the age of10 - doesn't blame her parents for her education, crediting her mother, Mary Hudson, with being a great teacher.

She said: ''She went to a couple of girls' schools in Carmel and then went to Berkeley and studied abroad in Spain. She speaks French, she used to be a painter, but now she is just in the ministry. She used to be a reporter, actually. She wanted to be Barbara Walters.''