User blog comment:TheSonofNeptune/Is Percy Jackson going to have to repeat a grade in Highschool?/@comment-3146930-20130109032040

Percy will most likely be fine as far as school goes. As we have seen, Camp Half-Blood has campers that spend all year there and Chiron is a teacher. So even if Percy has to repeat a grade, he can make it up with Chiron so he doesn't have to suffer the embarrassment of being a year older than everyone else.

There is also another solution. If the two camps do learn to get along, Camp Jupiter has their own college, so thy most likely have a school system as well. Percy may also go to school there after the war and catch up, maybe even getting his college degree. Has Percy thought about his future at all? I think he should get a degree in Marine Biology, or maybe become a dolphin trainer.

A third option is manipulation of the Mist. While Percy himself isn't good with this, Chiron is shown to be skilled with it (making everyone forget Mrs. Dodds while at the same time making everyone remember a new teacher, including the teacher herself). If he walked up to the school board and was like "He was here all year and got excele...average marks," then snapped his fingers I'm sure they would believe him. Meanwhile, Annabeth is probably quizzing him down in Tartarus.