Young Törless
Der junge Törless (original)
Starring Mathieu Carrière, Marian Seidowsky, Bernd Tischer, Fred Dietz, Lotte Ledl, Jean Launay, Barbara Steele, Hanna Axmann-Rezzori, Herbert Asmodi, Fritz Gehlen
It's a drama and history movie, and has a rating of 7.3 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Italy.