20 parts Ongoing After the war against Gaea, Percy returns to attend his last year of High Scholl at Goode and Annabeth accompanies him, since after Tartarus the two cannot be separated for a long time without having an anxiety attack.
The justification giving to the school about Percy's disappearance and his return with Post Traumatic Stress Disorder was that he had been kidnapped along with his girlfriend, so an anxiety attack or panic attack by one of the two can only be calmed by the other and that neither a teacher nor a student should interfere.
The two have all the subjects together and only separate when Percy has training of the swim team (of which he is the captain) and Annabeth has, ate the same time, training with the academic Decathlon team.
But the story is not about the last school year of the couple, but about the times where gods, other demigods, satyrs, centaur, cyclops, and oracle appeared in the school and scared the mortals.
And, of course, maybe even the time they scared their classmates themselves.
Notes:
1) Trials of Apollo never happened, oracles works normally.
2) Annabeth's sword has been enchanted to become a bracelet with three pendants (an owl, a cat, and a dragon). The bracelet always returns to her wrist when withdrawn from her.
3) Amphitrite, Triton, Chimopoleia, Rhodes and Bentheskyme, are very fond of Percy
4) This is a translation of my own fanfic, "Assustando os mortais", that can be found on my Profile. It is in Brazilian Portuguese, my mother language.