The Weiss Kittens and the Family Tree (Paperback)

When a pair of brothers are assigned to write a school report about their family tree, it seems they don't appear to have "normal" parents. So asking their older brothers and sister for answers, they learn their birth parents were not truly ideal role models with a large part of it being the fact they were not originally made to attend school. So despite their poor original upbringing, can the boys manage to get a good grade on their project?