One possibility is that Naruto's growth as a ninja would be influenced in unique ways. If he were in a different class, he might be exposed to different teaching styles. A more lenient teacher could allow Naruto to be more creative in his ninja techniques, while a stricter one might force him to focus more on the fundamentals, which could either speed up or slow down his progress in different areas like taijutsu or ninjutsu.
Naruto in a different academy class could also change the overall dynamic of the story. His relationships with characters like Sasuke and Sakura would be different. Instead of the familiar rivalry and friendship triangle, he could form new alliances and rivalries within his new class. This could potentially lead to different story arcs, such as Naruto having to compete with a new group of classmates for top grades or recognition, rather than just with Sasuke.
Naruto's personality could become more reserved. If he were in a class with more serious students, he might feel the need to tone down his exuberant self. He'd still be determined, but might show it in a more subdued way.
In a fanfiction where Naruto teaches at the academy, he would probably bring a whole new energy. He could show off some cool jutsu in a safe way to get the students excited about learning. And he'd be really good at motivating those who are having a hard time, because he knows what it's like to struggle. For example, he might help a shy student come out of their shell by sharing his own experiences of being alone and then finding his true friends.
Well, he might introduce his unique ninja skills to the Duel Academy. Maybe he'll use his shadow clone jutsu during duels, confusing his opponents. He could also make friends with some of the students there who are interested in his different fighting style.
In a 'Naruto joins Cross Academy' fanfiction, Naruto would probably be quite confused at first. The setting of Cross Academy is very different from his ninja world. But he'd soon adapt. His combat skills would be a great asset. He could end up teaching some of the students his ninja moves, and at the same time, learn about the unique vampire and hunter world of Cross Academy. It would be an interesting mix of two very different fictional universes.
Well, in this type of fanfiction, Naruto could change the relationships he had at the academy. He may befriend Sasuke earlier and in a different way, perhaps preventing Sasuke from being so cold towards him initially. Also, he could have more time to train with his classmates and help them improve too, which would make for a very different dynamic in the group.
Well, one possibility is that the characters' personalities play a big role. Shy students might struggle more with the stealth test. Hinata, for instance, could be so nervous that she accidentally reveals herself. On the other hand, the more confident students like Kiba with Akamaru might come up with clever strategies. They could use Akamaru's sense of smell to detect any hidden traps or teachers waiting to catch them.
He might develop different skills. For example, if he were on a team with more strategic ninjas, he could learn more about planning and stealth rather than just relying on his brute strength. His relationships would also change. Maybe he'd form a closer bond with different characters and have new rivalries.
Well, in this fanfiction, the bijuu could cause chaos at Yuki Academy. Maybe they struggle to adapt to the academic environment.
Well, he might use his ninja skills to stand out. For example, his shadow clone jutsu could be a big surprise in the academy. Maybe he'd get into some friendly competitions with the students there, like in a physical training session.
Well, he might continue to study at the academy. He could form closer bonds with his classmates like Sakura and Sasuke. Maybe he'd focus more on improving his basic skills like chakra control. And he might get extra training from Iruka or other teachers to finally pass the graduation exam.