I'm a teacher in training. In my final block practice I was placed with another student for a bit, so we alternated between literacy and numeracy.
On the plus side it meant half the work. On the negative side it meant that I was landed with John Burningham as my author because my colleague chose him the week prior.
I don't dislike Burningham. His illustrations are lovely and The Shopping Basket has some scope, but generally his books don't have a great deal of substance (for example, Mr Gumpy - ergh).
I managed to milk TSB for all it was worth, but when I had to teach 'change in a character over time' I was stumped. Thank god for this book is all I can say.
Basically a boys character changes because of the way he is treated. It isn't War and Peace, but it did the job. There are better books for children on this subject and it is probably better suited as a cautionary tale for parents or teachers.