If OP is still around. I was the same way.
I started smoking pot and cigs early. Lots of acid, lots of x. Plenty of morphine. Got into a lot of trouble, and had a hard time with life.
You only get one shot at high school (ie..very few responsibilities, no really hard work) enjoy it! go to parties and have fun with friends.
The point I get from this thread is that you need to choose your friends a little more wisely, and also your dad is a douche. If you want to develop a better relationship with him, your going to need to stay on an even keel with him. You never have to disclose anything to the cops. They are not there to help you. You weren't in a car wreck or robbed...you were experimenting with drugs.
Do a little more research and just enjoy life while you can.