This book is by Jerry Spinelli. I got this book from a book swap with my friend. The book is good but it's a bit confusing. It's about a girl who comes to a school and she acts really weird and calls herself Stargirl. The beginning was how I thought it would be but not the middle and end. The chapters are really short and it's easy too read. I think this book would be good for the age groups 12-15. The end of the book is a bit of a cliffhanger.