The School at the Chalet by Elinor Brent-Dyer, for the 1925 Club

Madge Bettany, just 24, and her twin, Dick, have been responsible for their younger sister, Joey, since their parents died. Dick is home on furlough but works in Forestry in India, so Madge has come up with a scheme that will support her and Joey – she tells her brother she wants to establish a school in the Austrian Tyrol, where they once spent a summer, about an hour from Innsbruck: