If Harry Potter teaches at McKinley in fanfiction, it would be a total chaos in a good way. The students there are used to a normal school life. Harry would bring in Quidditch and the students would be thrilled. He could also teach them about the different magical creatures, which would be a whole new world for them. And of course, his Defense Against the Dark Arts classes would be legendary.
In this fanfiction scenario, Harry Potter might bring his magic to McKinley. He could use his spells to solve problems there. For example, if there's a bully at McKinley, Harry could use a simple charm to stop the bully. He might also introduce the students to the wizarding world, like showing them his magic wand.
A lot could occur. Harry might try to instill in Tom the importance of forgiveness. Given that Harry has forgiven many of his enemies, he could explain to Tom that holding grudges and seeking revenge only leads to more pain and destruction. For example, when he forgave Snape in the end.
One possibility is that Harry and Hermione's relationship would deepen during these teaching sessions. As he helps her with Expecto Patronum, they might share more personal memories. Harry could tell Hermione about the first time he saw his father's Patronus. Hermione, in turn, might open up about her insecurities. This could lead to a stronger bond between them, not just as friends but as comrades who understand each other on a deeper level. And when Hermione finally casts her Patronus successfully, it would be a moment of great pride for both of them, and it could also signify a new chapter in their relationship within the fanfiction world.
Perhaps Harry is teaching Potions in the fanfiction. Since he had a bit of a rocky start with Potions in his student days, he could be a very understanding teacher. He might encourage students to experiment more, which is different from Snape's strict methods. He could also share stories about how important Potions were in his adventures, like when they made Polyjuice Potion. This would make the class more interesting and inspire students to take Potions more seriously.
Maybe Harry Potter could teach the preschoolers magic tricks in a simple and safe way, like making feathers float. He could also tell them stories about Hogwarts and his adventures, inspiring their imagination.
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, one plot idea could be that Harry discovers a group of young wizards who have a very wrong idea about Muggles. So, he decides to teach Muggle Studies to correct their views. He could start by taking them on a 'field trip' to a Muggle town, but things go wrong when some of the wizarding spells accidentally cause chaos in the Muggle world. Then he has to fix things while also teaching the students an important lesson.
Well, Harry could get involved in some really off - the - wall pranks. Since he's bored, he might decide to play some elaborate tricks on his friends, like magically changing their voices during class.
In fanfiction, if Harry Potter disappears, it could lead to chaos at Hogwarts. His friends like Hermione and Ron would likely be on a desperate search for him. They might suspect the Dark forces at work again, and start investigating all the possible places where Harry could have been taken or hidden.
In fanfiction, Harry Potter could be wrongly accused of using dark magic in court. Maybe some false evidence is presented against him, like a planted dark magic item. And he has to fight to prove his innocence.