This is a pretty big concern for me as well. My oldest son will be 13 next month and a 10 year old. . I don't worry so much that they are doing anything at the moment, however their father that they go and visit on the weekends has the medical marijuana card. what he does when our kids are not around is what ever he is not my responsibility, our kids are.. I have asked the kids about it they say oh its just his medicine. When confronting their dad oh its just my medicine, they know what it is and that they are not to do it yada yada yada. I do not think that is a good example I understand they need to be educated on the subject, and they are but I don't think they need to be exposed to it. He says I am over reacting. any thoughts on this.