As for the question of adjusting, I didn't have any problems with the coursework when I skipped ahead in high school--I used to read other books in class a lot because I couldn't stand just sitting there doing nothing--and I developed evenly in all the courses.
說到適應的問題，我提早念高中時應付課業沒問題，上課常常坐不下去，看別的書，不過，各科都能平均發展。