Because of the story line that involves a sibling too young to attend school in addition to its straight forward series of events, this book is best for a pre-school audience. In a house with lots of (mouse) children, the youngest child is lonely and upset when his siblings leave for school each day, until one day when he decides to sneak out to visit their class. He finds his way to the elementary school and into their classroom, finding an open desk among his siblings and their peers. Their teacher eventually notices his presence and uses the young child to help teach; at the end of a long day at school, the little mouse falls asleep and goes back home with his mom, saying goodbye to his new friends. I thought the water color paintings in this book were very detailed, giving the reader a lot to notice on each page which helps maintain interest, as there are no words. The overall plot was very sweet and a relatable situation for many young children. I did, however, think that it may not be a very appropriate idea to feature such a dangerous behavior as some audience members might be drawn to attempt this. It could definitely be used in a pre-K classroom as a read aloud in which the students are asked to state everything they see on each page to help them formulate the story line. It could also be used, because of its simplicity, in a classroom library for younger students to look at during play time