A continuation of Enid Blyton's series, carried on by author Pamela Cox. These later books focus on Darrell's younger sister, Felicity.

Book 7 - New Term
Darrell has left, and Felicity is head of the third form. What a lot she has had to deal with -- June and new girl Freddie playing tricks continually, the sickly Bonnie shadowing her, and the stuck-up Amy, who has a strange family secret.

Book 8 - Summer Term
There's a mystery at the nearby stables - someone has stolen money and then poor Julie's horse! Can the third form help old girls Bill and Clarissa discover who is behind it?

Book 9 - Winter Term
Susan is excited to be in charge of the winter concert, but Miss Tallant, a new teacher, has very strong ideas about it. And when she interferes in a midnight feast, they realise there's a spy in their midst. But who could it be?