Bones Goes to School delves into the feelings that come with being different. It doesn't try to fix those feelings; instead, it looks at how they affect the main character and how he reacts to them. This book is intended to validate children's big feelings while also conveying the idea that those feelings are part of a journey.
It also explores the idea that everyone is unique in some way, and that even if a person is very different from those around them, they are exceptional.