Bridey McCrory

Bridey McCrory is a reluctant pupil at St Hellga's, a school run by the cruel Miss Hardbotham, who allows her girls to eat only herbs. Tormented by their longing for meat, Bridey and her rebellious companion Mary-Anne make their escape and set off on a carnivorous rampage, soon to be joined by the infamous tiger, Macdonald, whom they release from imprisonment in the local zoo...

As a bonus, the book also contains the cautionary tale of Mary-Anne