The angel of Nitshill Road - Anne Fine

Penny, Mark and Marigold are miserable. Penny is rather plump, Mark's compared with a Martian and Marigold can't speak to anyone - thanks to relentless bullying from Barry Hunter. Then Celeste arrives and things begin to change. Watering the plants, polishing her desk - her whims infuriate Mr Faraway, but the classroom looks better already. Celeste atrocious at maths - she doesn't mind about it a bit, but it gives Marigold hope knowing she's not bottom of the class any more. Barry tries to bully Penny at break, but Celeste stands up for her, saying that she could lose weight any time - Penny's shocked that Celeste mentions her size, but it makes her realise things need to change. When Barry calls Mark weird, Celeste laughs in his face, asking if anyone would possibly want to be normal, if to be normal is to be like Barry. The next day, Celeste arrives with a book and a gold pen, and each and every last horrible word or taunt is entered in the book, with witnesses. The children begin to take control of what's happening to them and Mark just makes a joke of it when Barry puts a cardboard box on his head.;When Celeste has to leave, she gives the book to Mr Faraway who is first astonished, and then realises he too was silent about what was going on. Celeste steps out, but not before astonishing everyone by leaving the gold pen with Barry Hunter.