Jenny,
If you check back in, you have a lot of great feedback. Perhaps you and your parents need to find a school that is a better fit for you where you will be valued for what you bring to the table - high intellect, discipline, ability to perform within a prescribed set of rules, etc.
For what it is worth, I have three children with gifted IQ's. None of them have cared one whit about their grades unless it was a required stepping stone to do something they did care about. Being gifted, in and of itself, is not a ticket to success in any field, so don't get hung up on the IQ requirement.
Just focus on finding the best fit where you can thrive and develop your talents so you're ready to do what you want to do with the rest of your life when school is finished.
