The classic boarding-school series from the best-loved author of the Famous Five - loved by readers for more than 70 years.
In Enid Blyton's bestselling school series Elizabeth Allen is sent away to boarding school and makes up her mind to be the naughtiest pupil there's ever been.
Book 8: Well Done, The Naughtiest Girl
Elizabeth is desperate to play the piano in the end of school concert. But Arabella is very good, and so Elizabeth spends every waking minute practising. But what about all the exams? Will the Naughtiest Girl have to stay in First Form another year?
Book 9: Naughtiest Girl Wants To Win
When new girl and famous young actress Kerry becomes head girl, Elizabeth is convinced that the seniors have been swayed by her acting skills alone. The real Kerry is a nasty piece of work - but how can she prove it?
Book 10: Naughtiest Girl Marches On
Elizabeth is overjoyed to be appointed monitor again. But one of the second form boys is turning all the other boys against her, starting with a nasty note in her desk. Can she find out who has a grudge against her - and why?
Between 1940 and 1952, Enid Blyton wrote four novels about Naughtiest Girl, Elizabeth Allen. Books 5-10 are authorised sequels of the series written by Anne Digby in 1999. Both cover and inside illustrations were created by Kate Hindley in 2014.
Enid Blyton's books have sold over 500 million copies and have been translated into other languages more often than any other children's author.
She wrote over 700 books and about 2,000 short stories, including favourites such as The Famous Five,The Secret Seven, The Magic Faraway Tree, Malory Towers and Noddy.
Born in London in 1897, Enid lived much of her life in Buckinghamshire and adored dogs, gardening and the countryside. She died in 1968 but remains one of the world's best-loved storytellers.