A little boy and a young monster accidentally switch schools on their first day, with hilarious results. At the School for Nice Boys and Girls, the monster is surprised to learn he must sit still, be quiet, and wait in line. Meanwhile, at Monster School, the bewildered boy finds himself launching a custard pie attack, counting bogies and sharing nasty smells. The child and the monster play by each other's rules, at first bewildered, soon horrified - and eventually getting into the swing of things. This madcap picture book is perfect for little monsters everywhere!