Percy could meet the school bullies. And they might pick on him at first, but then be in for a big surprise when he shows his strength. Also, he might encounter some teachers who suspect there's something different about him. Maybe a science teacher who notices his quick reflexes during an experiment or a history teacher who is amazed by his knowledge of ancient mythology.
One possible fanfic could be about Percy and Annabeth facing a new mystery in high school. Maybe there's a strange teacher who seems to know more about their demigod past than they're comfortable with. Percy could be struggling with his ADHD in the academic setting, and Annabeth is constantly helping him study while also trying to solve the mystery of the teacher.
In the fanfiction, when Annabeth goes to Percy's high school, she would probably form a study group. With her knowledge, she'd help Percy and his friends get better grades. Also, she might start some kind of architecture or history club in the school since she has a passion for those things.
Maybe Percy would struggle to fit in at first. He's used to a different world, like Camp Half - Blood. But with Annabeth by his side, he could start to adapt. He might make new friends or get into some trouble with the school bullies, only to show off his demigod skills in the end.
Well, Percy might face some academic challenges at Annabeth's school. Since he's used to his own demigod training, normal school subjects could be a bit tough for him at first. For example, he could struggle with math or history classes.
In the fanfic, when Percy goes to Annabeth's school, he could end up in trouble with the school authorities. Since he's not used to a normal school environment, his demigod abilities might cause some chaos. For example, if there's a pool at the school, he might accidentally show off his water - controlling powers. And he'll probably have to deal with normal school stuff like classes and bullies, which will be really interesting to see how he copes with it all.
He might meet normal high school students. There could be the typical jocks, nerds, and popular kids. Maybe he'd encounter a really smart student who is intrigued by Percy's different way of thinking. Or he could meet some mean students who pick on him at first but then learn to respect him.
There could be a school janitor who is actually an old demigod who retired from the hero business. He could give Percy some valuable advice based on his own experiences. And of course, Percy will surely meet Annabeth's classmates, some of whom could be friendly and some not so much, depending on how they react to the new boy in school.
They could be involved in a high school project that turns out to be related to an ancient prophecy. Percy might use his water - controlling abilities in a science experiment in a really cool and unexpected way, and Annabeth would be there to explain the historical context behind it all.