Ninja Academy Student: Ninja parents send their young to an Academy where their kids can learn basic ninja skills and begin training to become stronger. The skills that the students learn allow them to clone themselves and also inpersonate someone else. This alows the students to begin learning how to control their Chakra and eventually graduate to become Genin Ninja's.
Genin Ninja: Upon graduation from the academy students are given bands with their Villages mark on them. They wear these bands to represent they are no longer academy students and are now capable of doing missions. Since they are still low ninja they only do low level tasks that require very little skill but do allow them to learn teams skills since they are grouped together with 2 of their fellow classmates from the Academy.
Chuunin Ninja: When this level is aquired by a Genin their responsiblities greatly increase. They move from remedial tasks to harder ones where they are also assigned a small group of other ninja to work under them. Another one of their responsiblities is to teach younger ninja at the academy and pass on their knowledge to them. Becoming a Chuunin Ninja shows that you have exceptional skill, leadership qualities, and the ability to handle yourself in intense combat. Since activities to become a Chuunin are very hard and competative it is not easy to become this level of Ninja.
Jounin Ninja: Once Chuunins have mastered their ablities and have become strong enough to operate on a completely diffrent scale they go through an extremely selective series of tests to become a Jounin. A Jounin is assigned the hardest missions also as well as given the tasks to lead 3 Genin ninjas to becoming Chuunin Ninja. Some Jounin take special interests in some Genin Ninja and pass on special techniques and abilities that greatly increase the Genins strength and potential in the future.
Kage: The most elite and strongest of a village is the Kage. They are the most powerful of all and hold supreme abilities and techniques to protect and run their villages. There is only one per village and all have a diffrent name starting with Rai(Lightning), Tsuchi(Earth), Ho(Fire), Kaze(Wind), and Mizu(Water). They are the leaders of their villages and eagerly watch over the raising of young Ninja since they will be the future strength of the village.