The Chalet School and Jo (by Elinor M Brent-Dyer)

In my slow re-reading of the lengthy ‘Chalet School’ series by Elinor M Brent-Dyer, I reached the seventh volume, ‘The Chalet School and Jo’. This is one that I have in the Armada paperback edition, as - according to the official site - it hasn’t been abridged, unlike many of the others. I didn’t remember it with any particular fondness, but it’s been over ten years since I last read it. 

Jo is sixteen in this book, and has been appointed Head Girl. I didn’t quite understand why she takes up...