Norwegian students start celebrating their graduation a whole year before the anticipated event. The most intensive part of the so-called "Russefeiring" falls on their final spring semester, that is from mid-April to the 17th of May, Norway's National Day. Students that are supposed to graduate from high-school are called "the russ".
During Russefeiring a number of russ-related events and festivals are held across Norway, so that all the graduates could meet each other. The first of May is marked with special activity, when the students drive their russ cars and buses all night and stop in different places to drink, dance and have fun together. They wear pants inside out until midnight and then they actually change clothes—wear the pants in a proper way and become russ. Russfeiring has been celebrated since 1905 when some graduates in Norway decided to wear red caps. Today each school has its own list of things to do to get a knot which is tied onto the string on the cap. The more knots – the better. These fun-filled festivities end on the Norwegian Constitution day with the russ taking part in the solemn parade, marching, and singing loudly.