(This is a review of all three books of this trilogy, which I have in an omnibus edition, though Goodreads doesn't seem to.)
These books tell the story of Moth's efforts to become a dancer. Starting just after she fails the audition for the Royal Ballet School, they detail her life at another full-time ballet school, living with her great-aunt and her Australian cousin (another would-be dancer), up until it comes time for the audition for the Royal Ballet's Senior School.
They don't have the sort of hot-house, ballet-is-the-most-important-thing-in-the-story-world feel of the Drina books, or even the ballet-is-the-most-important-thing-to-the-heroine feel of Lorna Hill's Sadlers Wells series - despite the fact that ballet really is the most important thing to Moth. But she's a more rounded individual than Drina or Veronica, more capable of fun and more inclined to behave like the child she is.
Likewise, the story is more realistic than other ballet books; Moth does not keep getting lucky breaks, or keep impressing her teachers with her dedication and brilliance - though she is considered a promising pupil. Nor does any sudden accident put paid to her dancing for weeks at a time. And when it finally comes time to move on from the Fortune School, - a somewhat more probable turn of events than, for instance, the end of the Drina series.
Having said all of that, though, while I like these books, I don't love them the way I love the more traditional ballet stories.