House of Whipcord (1974)

An old man who lives in an old house conducts a correctional institute for girls. But he does not realize that the date is the present as he's been cooped up in the house. He is assisted by a matron who likes to get the girls into trouble and present them in front of the old man who thinks he is the law and passes out punishment. Afterwards the girls are tied to a cross and whipped. Meanwhile the matron's son falls in love with a girl at a party and brings her to the house.