The last of the white-spined Armada paperbacks, so a bit of a milestone in my re-read. And at least the girls on the cover are in blue. The first time I read it, the previous book was unavailable, so the apparent disappearance of Claire from the Freudesheim nursery went unnoticed; but even this time, I'm left wondering when exactly Phil became so ill with polio.
Challenge is a actually quite a complicated Chalet, as there are several plots going on simultaneously, and each of those splits up into further, inter-crossing plots. It's probably best illustrated by Venn diagrams or something but my html isn't up to that so here's the description:
Staffroom changes plot: Miss Annersley is away for the term, so Miss Wilmot takes over as head. So we have the 'inexperienced head' thing going on as Miss Wilmot learns how to do her new job. Miss Ferrars is then taken ill, so Dr Benson comes in to teach ('new teacher', 'difficult junior', 'difficult senior' all intersect here), and the prefects are given the job of producing the nativity play ('difficult junior' and 'difficult senior' intersect here, and not just at the end when, as you'd expect, they are struck by the message of the story and turn into new people.)
Difficult senior plot: Evelyn, whose mother is being treated at the Sanatorium, is mighty miffed to find herself at school. This results in an 'all hate the new girl' plot (intersects with 'inexperienced head'), a 'new best friend' plot (sadly discarded before it gets going, in the paperback at lest), 'Margot's temper', and 'ill mother' (intersects with the 'Freudesheim' plot).
Difficult junior plot: Jocelyn is a pain in the neck ('new teacher'), gets into trouble over the nativity play ('staffroom changes' - it would never have happened if Miss F had been there), and then runs away and has to be rescued from the snow ('Freudesheim').
Freudesheim plot: Phil is being treated for polio so Joey isn't as in and out the school as usual, and the triplets (now all senior prefects) are worrying about her (Phil, that is, not Joey). Mary-Lou turns up ('difficult junior', 'difficult senior', 'ill mother', 'staffroom changes') for a fortnight.
It's as if EBD jotted down lots of ideas onto a pack of cards, picked 24 at random, and then tried to work out how she could join them all up into a story. Sometimes it works - I do like the cobbler's wax trick and its aftermath, and it's good to see Mary-Lou losing her temper for once, even if she only does it for a sentence. And as Chalet School books go, it's not a dull one. But there is so much going on that what it's supposed to be about - the Chalet School coping with the absence of Miss Annersley - gets a bit lost and doesn't seem to be nearly as much of a challenge as the title suggests.