- Country: Italy
- Genres: Comedy
- Release: 1974-03-07
- Director: Sergio Martino
- Writers: Sergio Martino , Fernando Popoli , Sauro Scavolini
- Language: Italian
- Stars: Susan Player , Riccardo Cucciolla , Alfredo Pea , Claudio Nicastro , Rosalba Neri , Fiorella Masselli , Renzo Marignano , Lia Tanzi , Mauro Perrucchetti , Loredana Fabriani
- Runtime: 87 min
- Awards: N/A
- AKA: Cugini carnali , Sommaren med Sonja (Sweden) , L'initiatrice (France, French Republic) , Primos Carnales (Mexico) , High School Girl (India) , Cugini carnali (Italy) , Loving Cousins (United States of America) , The Visitor (United Kingdom) , Liseli Kız (Turkey) , O protaris kai i exadelfi tou (Greece) , High School Girl (United States of America) , Sonia, den pige man elsker (Denmark) , Primos carnais (Portugal, Portuguese Republic) , L'initiatrice (Canada) , Mi prima carnal (Spain) , Cugini carnali (India) , Hot and Bothered (United States of America) , Sexy Relation
- Plot: Nico d'Altamura is a shy sixteen-year-old boy. During the summer, he becomes acquainted with his cousin Sonia, who stays at his home for some time. She grew up in the city and is much more open and uninhibited than her cousin. An equivocal relationship between them starts to develop, which disrupts Nico's life. At the end of the summer, before leaving for Rome, Sonia finds a way of sharing her bed with him.
- IMDB:tt0071378
High School Girl Cast · · · ALL
Sergio Martino
Director
Susan Player
Sonia
Riccardo Cucciolla
Celio D'Altamura
Alfredo Pea
Nico D'Altamura
Claudio Nicastro
don Savino
Rosalba Neri
Altomare
Renzo Marignano
Father of Sonia
Lia Tanzi
Young maid of Roccadura
Hugh Griffith
(I)
(1912–1980)
Barone di Roccadura
Edda Ferronao
Carla Mancini
Raf Baldassarre
Vera Drudi