This is a book that will be of interest to boys as well as girls. The main characters are four brothers who are ages 12, 10, 10, and six. The two 10 year olds are not twins biologically. All of the brothers are adopted, and Jax and Eli were such friends as toddlers that their adoptive dads adopted them both at the same time. The oldest is Sam and the youngest is Frog (as in "Jeremiah was a bullfrog".) The brothers are all beginning a new school year in the opening chapter of the book. As the school proceeds, things don't go quite as each of the boys thought they would.
I really enjoyed this book overall, and think boys (and girls) aged 8 to 10 would particularly enjoy it, as well as people who enjoy family stories. However, something that bothers me now, and would have bothered me at that age as well (I spent time as a young child rather obsessed with what age everyone should turn in what grade.) At 10, Eli and Jax were only starting fourth grade. I was 10 when I started fifth grade. It was the same with the others. Frog was already six and only starting kindergarten, and Sam was 12 and starting sixth grade. Excuse me, but I was 11 most of my sixth grade year . . . perhaps all of their birthdays were in August right before the school year?