In what school system are you “free to move ahead yourself”? Pretty sure at most schools you’re expected to participate in the current curriculum and take the tests as scheduled.
No
I moved ahead by studying computer science at the university when I was 13 years old. Thereby I was taking courses at school and university in parallel. But the school courses were all at regular paces. Then I had to repeat topics at school that I learned years ago at the university. I had almost finished my bachelor degree before I had finished high school. The school was a complete waste of time. I also got demoted by one or two grades in school for "not asking enough questions in classes"
Eventually this cultinated in a row between my parents, the tracher and the headmaster.
Because mu parents had my back, she stopped creating dramad but I never got the grades i was meant to.