My 14yo son has never been to school. He has had plenty of opportunity for unrestricted movement, free play, including outdoors in nature, and unschooling-inspired academics tailored to his needs. He eats mostly whole foods, clean well water, avoiding fluoride, we use only natural cleaners around the home. We tried supplements, diet changes, pressure vests, time management helpers etc etc. His ADHD symptoms did not “largely disappear” until we started meds when he was 12.