When it comes to the students masturbating in any location shower/bathroom or any other room this will only happen when every one else has left the room and she is the only left. " Masturbation rule 1-0-1 "
The same rule apply when the students engage in " Yuri Peeping " when both are left talking to each other depending on the location of the room they are speaking. Catching them during Yuri in the bathrooms are very rare to which I have only be able witness handful of times.
Hence the reason the " Lewd bar " decreases after they masturbate or engage in Yuri when you witness them performing either.
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But as you know each personalities have there own ways off seducing them & making them horny " The old cat & mouse mind game " Keeping them keen but denying them release via your own efforts will also increase there masturbation efforts with asking the right questions and interactions. " To be honest I am still learning all the different personalities " Have mastered a few but this is what keeps the game interesting.
Anyways all the best Alex