Erik Soya's 17 (1965)

Curiosity Kills Cats...and Makes Men Out of Boys!

In the summer of 1913, 17-year-old Jacob, a Danish high school student, lives in the frustrating limbo between boyhood and manhood. He worries about his excessive focus on masturbation and, although he is aware of the sexual overtures by the housemaid Sophie, Jacob doesn't know how to respond to her.