Boundless Grace is an excellent story that is PERFECT for so many reasons! I have seen this book used in a 3rd grade classroom for a character analysis of the main character (you guess it) Grace. The students compared Grace at the beginning of the story and at the end of the story. I personally would LOVE to use this as a way of talking about families! I won't spoil the books, but Grace has a unique family dynamic that could be relatable to some children. I would use this in any elementary grade above 1st grade!!