Henry is sharing school secrets with his new classmate as they embark on an action-packed tour. Mysterious inventions lurk, the library is a labyrinth, the cafeteria requires ninja skills, and some of the teachers may be monsters! Is this strange school to be believed? Or is there an even more outrageous surprise in store?

From I Didn’t Do My Homework Because …, A Funny Thing Happened on the Way to School …, The Truth About My Unbelievable Summer …,and A Funny Thing Happened at the Museum … author/illustrator duo Davide Cali and Benjamin Chaud comes an unbelievably entertaining school-and an absolutely unforgettable adventure!