The Spanking Mistress Trilogy

Book 1 - The Caning Mistress: The headmistress of a boys' school has a secret; she worked as a dominatrix when younger. One of her pupils discovers photos of her in an old femdom magazine, and she has to be a dominatrix again to ensure his silence and that of his parents.

Book 2 - The Whipping Mistress: The Kinky Headmistress accepts a new pupil into her school because he has rich parents. But the pupil is an unruly, gun-toting, anarchist who insults women. The headmistress and her female staff, and also her daughter and granddaughter, combine to discipline him and his parents.

Book 3 - The Flogging Mistress: The Kinky Headmistress wants to sell her school. The prospective purchaser is a business woman who is even kinkier. The purchaser appoints the sadistic mother of one of the pupils to run the school for her. And the Kinky Headmistress and her granddaughter demonstrate to the new headmistress how to instil discipline properly.