The Chunin Exams are a type of test in which a genin is promoted to a chunin on based of their abilities . A step of test are alloted to the genin and if the pass, they will be considered for promotion to Chunin. A genin does not necessarily have to undertake the exam along with their teammates, and can take the exam tim to time.Sakura Haruno became a chunin from genin even after their team mate naruto(genin) and saskue(genin)left the village.A three-stage exam was held in Konohagakure.Genin require skills and judgment to become a Chunin . The test can differ from year to year in different villages.
The first stage: It is a written test, which includes difficult questions related to different ninja subjects which are beyond a genin level. but few chunin were hidden within the mass to provide a reliable source to cheat off .This test is conducted to checks information gathering and decision-making abilities, because for the genin to pass this stage, cheat without getting caught by the watchful instructors. As such, the instructors place chunin within the mass to provide a reliable source to cheat off of.
The second stage: It is a survability test that conducted to check the abilities of accomplishing a mission and real life survival skills without a sensei. The genin arelocked in the forest of death, in this dangerous training area they survive 5 days without anyones help. each team is given a scroll, heaven scroll or a earth scroll. They are also required to obtain two different scrolls and enter the building in the center of the forest within five days , to advance to the next stage, they have to fight other team to get the scroll.
The final stage: It consists of tournaments , in which the remaining genin who passed the two test are to fight other genin one on one .they are observed by important personal from all over from different countries and council members , they decide if they become a chunin or not.
Genin from all over the shinobi villages gather together twice every year and take the test.chunin exam were done to improve relations between the hidden villages and prevent war between them. Another motive is to attract clients to hire the shinobi who took the exam, to earn money. these tests are very dangerous and in years many genin have even lost their lives. This is usually conducted to show the villages military power. Preliminaries exam may also conduct if the no of shinobi are too many.