I struggled with how to use DS' scores with the school, too. After it was apparent that differentiation wasn't going to work for DS, I talked to the principal about what could be done. I outlined my concerns for DS and suggested that gradeskipping could be an alternative for him. Later, I formally requested the gradeskip. When the principal hemmed and hawed and told me how "unusual" my request was, I gave her a copy of his scores and said, "I know, but this is an unusual situation."