I think this book could be read for any grade level because of the lesson it teaches to the students. I think it would be most appropriate for 3 to 5 grade because these grades are more prone to bullying. The ATOS reading level is 3.6. They would be able to apply this to their lives and experiences a school. I would use this in my classroom by every time they heard a mean word, action or phrase they would eat a jelly bean. They would then create a poster about being nice and what not to say.