Since the games SlaveMaker and Whore Master where mentioned, i wanted to share one mentionworthy game some of you may or may not know.
In Ashford Academy you get to be the principle of a school. You can make some choices like how conservative the dress code should be, or how hard the students should be punished.
I liked the most, that you can watch and kind of feel, how the students become more and more spoiled.
It is a free, roughly one year old game which is still in developement and has modding support. The CG's are well done, especially for a free title.
https://www.henthighschool.com/ashford-academy/Have fun!