But Mam'zellle is in for a shock! Out to break every school rule, new girl Claudine is no teacher's pet.

The twins arrive at St. Clare's ready to work and play in the summer term as they enjoyed at Redroofs. Will Bobby change and will Carlotta's secret comes out?

A classic children’s story from the world’s best-loved children’s author, Enid Blyton. School life has never been so splendid. Pat and Isabel O'Sullivan plan to give everyone at their new school a few surprises. But it's them who are in for a shock . . . Watch out! There's trouble at St Clare's! Enid Blyton is arguably the most famous children’s author of all time, thanks to series such as The Wishing-Chair, The Faraway Tree­, The Mysteries, The Famous Five and The Secret Seven. Her school stories – including the St Clare’s and Malory Towers series are the perfect books for girls who are experiencing their own adventure at school.

Schooldays at St Clare's are never dull for twins Pat and Isabel O'Sullivan in Enid Blyton's much-loved boarding school series. Claudine at St Clare's Eileen's mother is the new Matron and Mam'zelle's niece, Claudine, joins St Clare's and causes havoc wherever she goes. The twins are enchanted by rebellious Claudine and her mad-cap plans, but will she last the term? Fifth Formers of St Clare's The girls are in the fifth form, about to reach the sixth, but they are not too old for tricks and escapades, jokes and excitement. Especially amusing is French girl Antoinette who, like her sister Claudine, doesn't always understand the ways of St. Clare's. The Sixth Form at St Clare's The unimaginable has happened - the twins made head girl! It's a tough job - cheeky first formers and cruel Priscilla keep the girls on their toes. There'll be mischief at St Clare's! Between 1941 and 1946, Enid Blyton wrote six novels set at St Clare's. Books 5, 6 and 9 are authorised sequels of the series written by Pamela Cox and feature storylines set in between the original Blyton novels. These books were published in 2000/2008 and are unillustrated.

The O'Sullivan twins are now head girls! And two heads are better than one, with the new girls they have to sort out...There's two cheeky first formers - more twins! - and a sulky new girl in the sixth form, Morag. Morag detests St Clare's. She's only happy when she can escape to the local riding stables. The twins are sad it's their last year at St Clare's. Before they leave, will they find out what's wrong with Morag?