Jason's teacher gives him a notebook which he wants Jason to write in as a journal. He wants Jason to write anything he wants in the book and Jason slowly begins to use the book to write about his day and his experiences. The book is this journal - and the publishers have very cleverly made the pages look like a notebook, with ruled lines and a font very similar to handwriting.
At times this book can be hard hitting and hard to read but it is also a book which should be read by both children and adults alike, to find out how difficult it can be for a child in Jason's situation to adapt to life and also cope in day to day life.
I would say that it is suitable for older children 12+ due to its content but the book is one which should be read to allow children to understand how some children find it difficult in situations.