My kid has two standing weekly non-EC appointments. He keeps his grades up. My friend’s kid has a chronic illness which is a much bigger problem than some scoliosis and PT appointments and she keeps her grades up. (She went through scoliosis, too and kept her grades up). I’m sorry to be so blunt, but unless you were spending 10+ hours per week every week seeing the MD and the PT, it doesn’t really seem to explain the grades. And even then, time like that in professionals’ offices should have come out of extra-curricular, not studying.