Back years ago when school policy in this nation was made by sane persons there was also meritorious advancement at the Principal’s discretion. Meaning they could put you up a year or more ahead of others your age and grade level if you could do the curriculum at a higher grade level. I am 100% certain there are legal exemptions for this girl the school district and state can use to help her. Perhaps giving her the G.E.D. test is in the best interest of her and the state at this point.
“school policy in this nation was made by sane persons”
But then the Feds got involved. But that is a different topic for a different day.