The chubby-faced boy grinning happily at the camera in a slightly-crumpled school uniform is an image that millions of families up and down the UK have sitting on their mantelpiece . But few of those children go from dodging their homework and playing hopscotch in lunch break to ruling the country . Gordon Brown has now shared the school photo that he had taken aged five when he was a pupil at Kirkcaldy West Primary School . Gordon and Sarah Brown shared their old school pictures as part of social media campaign called # UpForSchool by the initiative A World At School , which Sarah co-founded . ( Pictured left : Gordon Brown , aged five , pictured right : Sarah Brown , aged 11 ) The former PM shared the snap as part of a social media campaign organised by his wife Sarah Brown , to push for better education for girls in the developing and third world . Sarah , who runs the charity Theirworld and is the co-founder of the initiative A World At School , also shared her old school photo on Twitter with the hashtag # UpForSchool . The aim of the campaign is to attract signatures for the initiative 's upforschool.org petition , which will be delivered to world leaders in September to ensure they keep a promise they made in 2000 to get every girl and boy into school and learning by the end of 2015 . The petition has already attracted three million signatures on their site . The actress and comedian Miranda Hart has also shared a picture of herself as a child with the words : 'My old school photo ( hot ) to support International Women 's Day and # UpForSchool . ' Miranda Hart as a school child left , and at the Glamour Women of the Year Awards in London , in June 2013 , right . TOWIE star Lydia Bright 's ( right ) mother Debbie also posted a picture of her daughter at school ( left ) The petition reads : 'Every child has the right to go to school , without danger or discrimination . 'Help create a message no government , politician or leader can ignore and demand that every child can go to school safely . Nothing changes without pressure . 'We are standing up to bring an end to the barriers preventing girls and boys from going to school , including forced work and early marriage , conflict and attacks on schools , exploitation and discrimination . 'All children deserve the opportunity to learn and achieve their potential . ' Education of girls not only further their independence , it also cuts the rate of child deaths , teen pregnancy and helps to provide more stable families . Illiteracy among women contributes to greater numbers of preventable child deaths . A child born to literate mother is 50 per cent more likely to survive past the age of five than a child born to an illiterate mother . Left : Gordon Brown speaks at Dumbarton Town hall to No campaigners last September in Glasgow , right : Sarah Brown at a 'Girl Rising ' Screening at BAFTA in April 2013 . Education also has a great impact on sexual and reproductive health outcomes for girls and women . In many countries in sub-Saharan Africa , for example , the birth rate among girls with no education is over 4x higher than those with secondary education . Providing education for girls also helps to fuel economic growth of a country . An educated female population increases a country 's productivity , yet some countries lose more than £650 million a year by failing to educate girls to the same level as boys . For example , if all girls in Kenya completed primary education , their additional output would equal 20 per cent of Kenya ’ s GDP . If all adolescent girls completed secondary education and delayed pregnancy until their twenties , this would add £2 billion to the Kenyan economy every year . Join the petition at www.upforschool.org .
Gordon and Sarah Brown have shared school pictures of themselves . It is part of social media campaign called # UpForSchool by Sarah 's charity . Comment: