Ok, I'm old enough to be your Mom's mom. I've been smoking for a couple months shy of 40 years. Your parents are not going to be happy with your smoking pot. They are going to worry about the reports that state the younger you are when you begin smoking pot, the more likely you are to have problems. I think you will have to bargain with your parents--good grades and only on weekends at home, would be good things for you to promise. They will worry that away from your home, one of your friends will pull a bone-head stunt and get you arrested along with him. They will worry about the physical affects of pot on the lungs-- this is a valid concern. Perhaps you could talk them into getting a vaporizor? It would be better for THEIR health too and would help insure that you would more likely smoke only at home. I would say, break the news after you bring home a good report card. Show them that it is not going to affect your schooling. Approach them with a level-headed attitude; you have to be able to convince them you are mature enough to handle the situation. Incidentally, I went to college in my mid50s, did most of my assignments stoned and graduated with honors! It can be done and I think you can do it, too! Good luck!