Playing on the latest version (1.2) and for the life of me I always lose all my girls within a week or 2. (Yes, I'm playing on easy mode). Either I'm a brain-dead Neanderthal or this game needs clearer gameplay.
Hello and thank you for your feedback! It is always good to have a specific strategy. For example; relying to much on affecting one stat, will harden the girls in that stat, and therefore it will be less effective.
My general advice for trying to make it far into the game, is to start working a bit on their inhibition by selecting options that has high humiliation or trying to pull down their clothes, and once you can get them down to their underwear, you start working on corruption by selecting the hard hitting pleasure options. Usually I only use pain and fright in the situations where I know I can't get the girl to fail if I rely on pleasure/humiliation.
I would also recommend checking out the tutorial that is prompted at the beginning of the game, and I would recommend focusing on specific girls, while not working on those girls that are a "lost cause".
If you defeat a girl using pain 3 times in a row, she will be very prepared going into the exam, as well as having a hardened fear stat, and a very high inhibition stat, meaning that she is very unlikely to stay in your class.
Anyway thats just some tips