I've been caught so many times it's not funny I've actually lost count its somewhere around 12-15. I'm not very sneaky and I don't really give a fuck. The first time I got grounded for 2 months and got beat up and the 2nd was pretty chill. Thursday I got caught and I got grounded which doesn't usually happen anymore because it's not a surprise but they still get mad almost everytime. I've almost gotten them to accept it. The best thing to do is be open and ell them why you smoke (anything but "to be cool" will suprise them because they can't imagine why anyone would do it) then tell them you won't quit and if your grades aren't effectd they shouldn't really care.