[Locked] Help me out and see if you know this comic i cant find

forgot the name of what I was reading but it was a teacher or a nurse brings a couple of male students into a room, then calls out a couple of female students who were in another room and tells them that they will be having sex for a while. The only thing I can remember is that she tells them its an experiment or they are all virgins and the school has been picking virgins to have sex every year. If this is a bad description let me know and ill try to remember more of it