Expect your parensts to tear through your room next time you're not around, so having a really good hiding spot is a good idea. Try to tell them it's not as bad as they're told to think. ( http://www.marijuanafacts.org ), and hopefully you can work out some sort of agreement. In the meantime, keep it on the down-low and make sure all your shit is hidden well and I think you should be fine.