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Coy Mathis sits on a couch at her home in Fountain, Colo., Monday Feb. 25, 2013. Coy has been diagnosed with Gender Identity Disorder. Biologically, Coy, 6, is a boy, but to his parents, three sisters and brother, family members and the world, Coy is a transgender girl. Ideas about gender-disorders began to develop in the 1950s, and have been evolving ever since, both within the medical community, and in American society. (AP Photo/Brennan Linsley)

Coy Mathis sits on a couch at her home in Fountain, Colo., Monday Feb. 25, 2013. Coy has been diagnosed with Gender Identity Disorder. Biologically, Coy, 6, is a boy, but to his parents, three sisters and brother, family members and the world, Coy is a transgender girl. Ideas about gender-disorders began to develop in the 1950s, and have been evolving ever since, both within the medical community, and in American society. (AP Photo/Brennan Linsley)

Transgender girl in legal scuffle with school

A six-year-old transgender child is fighting alongside her parents for the right to be recognized as a girl at school. Coy Mathis, who was born male but has identified as female since the age of four, was barred from using the girls' restroom at Eagleside Elementary School in Fountain, Colorado in December.