Wearing a school uniform can sometimes be a pain, but some kids in Australia have got more than ties to worry about.
Children at Arncliffe Public School in Sydney risk being told off if they forget to put on their sunglasses when they head out at break time.
The school already makes pupils wear hats when playing in the sun, and now has added shades to its rules.
Experts are worried that too much sun can give people skin cancer and could damage people's eyes as well.
The education minister of the state of New South Wales, where Sydney is, said the government was thinking over making all kids wear sunglasses in public school playgrounds.
And it seems the bigger the sunglasses, the better they are for you.
An expert at Sydney Eye Hospital said wraparound glasses were the best for eye protection and children as young as three or four should be wearing them.