The sun is very intense here and the fact that Australia has the highest skin cancer in the world, means that children are educated from a young age to slip, slop, slap. Slip on a shirt, slop on a hat and slap on sunscreen 30+. The schools are also sunsafe, which means that you can't go outside unless you are wearing a hat. There is sunscreen in the classrooms for the children to put on.
I think that Australia is leading the way and other countries are following.