Even the Wind Is Afraid (1968)
Claudia is a young girl who’s suffering from horrible and terrifying nightmares at her all girl boarding school. They involve the voice of a mysterious girl calling her name at all hours of the night. When Claudia and her friends break the rules by trespassing a tower that was forbidden to go into, the harsh Head Mistress, Miss Bernarda punishes them by making them stay at the school during Spring Break. Miss Lucia, a good teacher feels the punishment has been too severe since a similar incident happened 5 years before when a student received the same punishment with horrendous and tragic consequences, and she is afraid it might happen again. But the tragedy from 5 years ago will reap the consequences now, as a tormented and restless spirit will enact her revenge.