Passion Flower Hotel (also known as Leidenschaftliche Blümchen, also known as Boarding School) is a 1978 coming of age comedy film directed by André Farwagi.

It is a liberal adaptation of the 1962 novel Passion Flower Hotel and stars Nastassja Kinski as one of the schoolgirls, in her third feature film.

Curious American girl Deborah Collins (Kinski) arrives at the St. Clara's Boarding School in Switzerland.

The school headmistress wants to use Deborah as a tool to discipline the other girls but she is revealed to be more experienced and daring in sexual matters.

After Deborah finally has sex with Frederick Sinclair (Sundquist) in a romantic setting, she is expelled and the other girls feel that everything will be so sad and boring without her.