One point I wanted to bring into my interviews was that both of my parents are doctors, so I understand the commitment and dedication you need to be a doctor. Are there any other things that I could say to boost my interviews dealing with how I am more suited for a seat at their program than others because my parents are doctors (experience, ect.)
Oi vey, DO NOT try to use your parents as a selling point. Unless you've been rounding with mommy and daddy (and no, career day doesn't count), your parent's occupation does not grant you any special insight into medicine. When you tell adcoms that you know about medicine because your parents are doctors, you're really telling them that 1) you haven't spent a lot of time exploring medicine outside of the context of your parents, and 2) your decision to enter medicine is most likely reflexive, not premeditated or thoughtful. I can think of no way in which having doctors as parents makes anyone more "suited" to medicine; the thought just drips with entitlement. Statistically, med students are more likely to drop out of med school if one or both parents are doctors. Try selling that one to the adcoms.
The best, and toughest, thing you can do is not be nervous. That only comes with practice. Second, don't ever be arrogant, condescending, or presumptuous, especially as a high school student. It's hard to balance humility with confidence, but it can be done. Third, don't ever panic. I'm not sure how hard they'll be on high schoolers, but if you get a tricky or non-standard question (e.g., "tell me a joke," ethical scenario, etc.), they're not interested in your answer, they're interested in seeing how you handle a curveball. If you just stay calm and speak in complete sentences, you've won.
As for everything else, just
think about the basic questions - think about, as distinct from memorizing something (you think) sounds good. Some have been posted. Just google for the rest.