Autumn Term by Antonia Forest is the first in her Kingscote school (Marlow Family) series. It was first published in 1948.
It begins with twin girls Nicola and Lawrie Marlow travelling by train to Kingscote School to join their four older sisters there. Before they even reach the school Nicola has a moment of madness which could have ended in tragedy. Big sister Karen Marlow is unimpressed as she’s the Head Girl and a misbehaving young sister is reflecting badly on her.
Nicola and Lawrie are shocked when they discover that they aren’t as clever as they thought they were. All of their siblings are smart, it’s a bit of an embarrassment for the youngest girls to be put into the Third Remove. Nobody expects much from that class but the girls are determined to make the class’s mark in the school, somehow.
This is a really good read. Antonia Forest was so in tune with girls of high school age, and the scrapes that they can get themselves into. In parts it reminded me a bit of Noel Streatfeild, with a play being rehearsed and acted towards the end.