After destroy Juubi Naruto back to the village and pass chunin exam , after one or two year Naruto pass Jounin exam or whatever and than he will become Hokage. How Genin can be Hokage ????? That`s shame for Konahagakure , one genin become Hokage

Naruto did not become chunin after saving the village and all the ninjas who were killed by Pain during the attack on Konoha. Why he beocme Hokage after saving the Shinobi world ?