Yes, just double check with the players before you get handsy with their character. On top of that, all students are legal adults since it is a requirement of the school. No one under the age of "18" is allowed and by that I mean, their version of 18. My elf is 100 years old but that is his version of 18 so he couldnt join the school until age 100 and if someone doesn't reach adult until like, 30 then they can't join the school until that age. So long as you follow this rule, it is alright to play a perv teacher who gets handsy with his students but check in with players before rping it out.