BT, DT. I'd rather have spent the time sewing shirts in a sweatshop.
My Bill there in the picture, 12 years old, runs marathons, plays drums, rocks babies to sleep ... I'd go to jail before I'd send that boy to middle school. They'd want him on drugs within a week, even though he's up to grade level in every subject and gets the best test scores of any of my children.
You have your head screwed on straight. School is damaging in so many ways. One way that is not often considered is the sheer waste of time and talent; the simple waste of human potential.
As a parent, it's amazing to see unfold in children the gifts and talents that God has given them. To phrase it kindly, schooling is simply opposed to self-knowledge and self-discovery.