Written by Anna, my student, 10 yrs old-
This book is about the world's worst kids. I found them annoying, but read the book cover to cover very quickly. I think it would suit 9-10 yr olds. There are lots of pictures, and lots of information on each page. The thing I like is how the words go all over the page. It's better than other David Walliams books. I would give it 4.5 Stars for the stories.