I read this story about a year ago for a class presentation. To be honest, it is a cute story, but I think this is more of a "read at home" story. Ella Sarah does teach us to have a fun sense of style and to be ourselves, but some children reading this story would probably get the idea that it is okay to whine and scream until they get their way.
If I were to read this story in my classroom, I would probably read this aloud on one of the first days of Kindergarten. It is a funny read, and at the end I would imply that this is not how we are to act, then discuss classroom behavior rules.
Reading level: 1-2 grade