I am a teacher who assigns this book, and although there is a mild language problem it is nothing to write home about. I only assigned 15 of the 30 chapters to my class and they read the whole thing. Most of them came to class and talked about how they couldn't put it down and how they were going to buy the next story. I assigned this at the end of the school year when it is hard to get them into much of anything let alone reading a novel, but they loved it! They stopped by my class to tell me how much they liked the book. Which incredibly prompted them to ask it I had the next one in the series. This was a month before summer break!