High school graduates around the world prefer to relax, expel stress and unleash their energy once they finish their exams.
End-of-school celebrations vary from one country to another, but the wildest behavior you will ever see is in Norway.
"During graduation, it's mainly about partying. It may sound funny when I say that, but in fact we have a bit of fun,” says Tanaborn Samviang, 19.
Samviang and her friends Martin, Tobias and Margherita were in their last year at Malakoff High School in the town of Moss, south of Oslo, and for three years they have been looking forward to the week before their final exams to over-celebrate graduating.
Although the exams were around the corner, they were ready to have a good time, as anyone from the Ras - the name given to high school graduates in Norway - have more important things to worry about than exam results.
First, there are clothes that must perfectly suit the occasion, they choose a name to call themselves and select a logo to be printed on shirts and on business cards.
Some even make a special song, and those who can afford the cost of a bus, rent one, along with drinking and celebrating.
This, of course, requires a lot of money, which pushes many Norwegian high school students to save up two or three years prior to the event preparations.
Margherita and Tanaborn said: "We sold candy and handmade socks" to cover the costs. It is also common to knock doors and sell items such as toilet paper.
"Some people can spend between 5,000 and 6,000 euros ($5,800 and $7,000) during this period," said Tobias.
Businesses have taken advantage of this craze and many sell clothes to cater to high school graduates.
Graduate expenses also include the huge fees for musicians who compose songs and cheers for alumni groups.
The graduating groups can get designs for their logos for only a few hundred dollars, but the biggest share of the money is usually spent on renting a bus, which can cost up to 50,000 euros, depending on its sound system.
The graduates tour the city all night, dancing and celebrating without caring about waking up early to go to school the next day, according to the German news agency.
"Over the past few years, there have been more and more complaints about the tours of high school graduates in residential areas," said Jan Stomner of the Oslo police.
"These celebrations include a lot of alcoholic drinks, and there are drugs as well,” she added.
"There are some people who think they are troublemakers," Samviang admitted.
