You might imagine that a 13-year-old girl would talk about emotive things like dolphins and rainbows, and talk in pink generics such as "making the world a better place".

BBC: Rio: Imagineering the future

"A lot of students do things that would absolutely appall their parents, " one girl said, including drinking and smoking.

CNN: Town meeting looks at lessons from Littleton

"Only a decade ago, a parent would have probably answered 'stop saying silly things' to a 6-year-old son who insisted on being a girl, " Malpas added.

CNN: Youth: Straight, LBGT or 'other'?