While watching "funny Boruto moments" on YouTube, I came across a scene where Naruto tells Iwabe and his team, that he that he is still a Genin, but he is a Hokage. In the starting episodes of Naruto, it is shown that Hokage is a rank above Jonin, so I want some clarification on why he could skip all the ranks and land at Hokage.
He is still a Genin. It was stated by him. (Episode 48)
What people most of the time overlook is, that the scene with Kakashi and Naruto isn't actual canon though, it should still be noted that these are the requirements. But we're talking about Naruto here he doesn't do things the normal way, which is important later on with the Kishimoto bit.
If we look into the databook book specifically for The Last: Naruto the Movie that plays 2 years after the 4th war, Naruto is still a Genin. 下忍 = Genin.
Sakura and Shikamaru on the other hand are already Jōnin. 上忍 = Jōnin.
And the rest are Chūnin. 中忍 = Chūnin.
Kishimoto specifically let Naruto stay a Genin. And yes, TheLast is canon. He did the character designs and was chief story supervisor. It was also the first time for him that he'd completely written everything from the start, including the lines in a movie production. That came up during the Interview that is linked.
He confirmed that Naruto went from Genin to Hokage.
Q: Speaking of Naruto, his dream of being Hokage came true, but when did he take the exam to become a jounin?
Kishimoto: Naruto didn’t become a jounin. He became Hokage as a genin. Sasuke is not a jounin or chuunin either, but rather, since he left the village, he is a nukenin. That’s enough for them (laughs). But I thought that having him suddenly go from genin to Hokage would be amusing and Naruto-like.
Even if he never achieved the Jōnin rank he should be as smart and as capable of Chūnin and Jōnin. People can't just become Hokage, not even Naruto. He must have still learned everything that needs to be learned for the Hokage position but just didn't get the chance to actual showcase this in the exams. But I don't think he needed to, I mean everyone (at least the Shinobi part of the Village) saw him during the 4th war and his prowess/abilities. The only thing that was missing was the educational part.
Well, according to Kishimoto, Naruto became the Hokage as a Genin. That should answer it.
Naruto had a Jounin title before he took up the Hokage title.
What a lot of people get wrong is the Hokage title. It is not only a rank, but also the title given to the leader of Konoha. Each Hidden Village will have a ruling Kage, but also have predecessor Kage (retired). A person could be classified as Kage level, but it is not a rank. It is the scale of power that Shinobi has.
Every Hokage, after Tobirama, before taking up the mantle was a Jounin. It is the custom and tradition of Konoha to appoint a leader who is not only powerful, but wise and collected. He should have a great deal of knowledge regarding major governing factors of the village.
This was the reason Kakashi, after the Great War, offered Naruto the Jounin rank. Of course, with conditions. That would include more studying. Naruto comically declines, but Iruka sensei helps him out (Naruto: Shippūden episode 479).
You have to be kidding me, out of all the episodes of naruto and naruto shippuden, nobody ever saw through this deception?
Remember: A ninja must always see through deception. Therefor he never kept the "status" of a genin clearly. You'll notice within the first few episodes during the 2nd bell test that after completing the test and succeeding, The 5th hokage Gramma tsunade had officially made naruto and sakura both jounin. Naruto as idiotic as ever, sure he technically would be a genin, but since narutos homecoming, the hokage examined both sakura and naruto thus promoting both on the spot. Naruto was only goofing when he said he is still a genin. On top of that, Naruto never understood the inner-workings of the whole political side of things and is still kind of a dunce when it comes to not knowing where he stands as a ninja except that he is following his passion to become hokage. Even after tsunade steps down and kakashi takes role of hokage, he is still sensei to naruto and sakura as pervy sage clearly let kakashi take over as teacher. Kakashi as stated, is smarter than shikamru, this is only a rouse to help develop naruto into a stronger, sharp minded ninja. it's only a teaching strategy and no more especially since the 5th exclaimed before they are now peers no less and on equal grounds. Kakashi is just fooling naruto leading him to really believe he is still a genin.