I got involved in a car crash... My parents don't know as of yet?

I have to agree, file a police report. Google your insurance companies information and customer service can look up your information such as policy number, info. You need to file this with your insurance company ASAP! They will set up a time where they can come out and look over the car, most likely during the week. I would not wait any longer. Insurance premium might go up a little, but if you don't report now, I would think this could effect your chance of getting good insurance in the future harder. Good luck and just be honest with them!