Mouse's First Day of School by Lauren Thompson

[Little Simon] Mouse decides to hide inside a bright red backpack...and ends up at school! As he explores this place full of colors, letters, and numbers, Mouse discovers a world beyond his imagination--and makes some friends along the way. Now a Classic Board Book, Mouse's First Day of School is sure to entertain children with its simple, energetic text and sweet illustrations, as well as get readers excited about their own first trips to school.