This is probably my second favorite book ever! You get to read about Class 507 whos teacher quits her job because of all the chaos. The kids have to try to keep the secret from the principal in order to do whatever they want to do. YOU SHOULD READ THIS
This is my favorite book in the history of all books. I was in 5th grade when I read this and I absolutely loved it. Me and my friends bought each bought a copy of the book then we read it an discussed it (kinda like a book club).