The Student Loans Company has also published advice to prevent fraud, telling students and former students to be wary of contacts seeking personal and financial details.

BBC: Student Loans Company's fraud alert

The study, published by education software company Renaissance Learning, also looked at a younger group in primary schools.

BBC: Teenagers' book choices 'go for easier reads'

Besides that magazine, some of those photos also were published in the Irish Daily Star newspaper and Chi, which according to its parent company Mondadori is a women's magazine with an average circulation of more than 218, 000 and a readership well beyond that.

CNN: STORY HIGHLIGHTS