A story told in rhyme about the different types of police officers on patrol. Now if my child checked this out at the library, I would say that it does present an opportunity to teach them on the subject. A police officer could arrive in a car, on a horse or on foot, but I protest to the phrase "Rock and Roll" being used one too many times. Perhaps it is used to teach children the art of repetition, but I wouldn't have used it. Other than that, I have given this book a four star rating, because the situations are real, the responses are done quickly and favorable outcomes present by the end. The pictures are great, the officers are both male and female so as to not leave any gender out and it is my belief that children could learn from this book.