I was one of those kids, school was boring and slow, finished the school library within year, got into arguments with teachers. Was not allowed to skip years, it was a drag, I skipped school and did other stuff. They did tried to forbid me to do high school exams because my school grades were low (missed a lot of tests and would drag down their stats). Did the exam anyways and had the second highest score of the country.

Not every kid is the same, there needs to be a place for kids that are (far) ahead.