I was way too young, and it was my father's VHS from the late 90's or early 00's (part of the reason I have little expectations) but the premise was that it was a boarding/finishing type school where women went to lean how to please sexually. Anyway the scene that sticks in my head is one where the are at least five girls on a long couch bent over doggy style (asses out) while five other girls are playing with them using toys and tongues while the head mistress/teacher asks them if they want more and they all respond in unison "yes please" or something along those lines. Please help if you can... even a link to buy a VHS would do!