I went thru the same shit you did when I first started smoking weed and my mom bitching at me about it... and saying its like crack and I print her out information and she just shreds it up saying its all a lie etc etc... I mean at least now after I been smoking for 6 years they dont fuck with me about it any more and my dad and other side of the family know its not bad which is pretty cool. So my best oppinion for you before you mom sends you to some type of rehab for punching walls thinking that your some type of pot zombie etc. Just do not let them know... Just on weekends go out to the movies or go to a local park and blaze a few joints or where ever you smoke and try your best not to get caught or hell smoke every day if you like but that could get you introuble. Trust me it will make your life 100 times easier if you just hide it and dont let them know... some parents are just too stubbern and when they hear about MJ they just close there ears and yell "lalalala" and dont talk to them about it either any more and maybe she wont belive you and make your life harder. Just do extra good in school and I know you can do it being a full time stoner and get strait A's and do alot of shit to make your parents happy and maybe attempt trying to sit down and talk to them about the truth about MJ when they can probally see your a pot smoker and do well in school etc... just an idea