Girls Who Play Alone (1980)

Rita, Elsa and Ursula share a room in an all girls boarding school located in a beautiful villa. Their favorite and seemingly only class is sexual education taught by Fraulein Steif. They gladly accept homework and even do some research of their own, as the local baker Roman, photographer, greengrocer and several inanimate objects (Mr. Cucumber and Electric Toothbrush) soon find out. And when they aren’t around, the girls still have each other.