I guess this comes a little late, but it really depends. If school bores you then it's not worth staying a year. I did that and I was bored out of my mind. My little sister skipped a grade and moved on just fine. Highschool sounds a bit scary, but remember that a lot of people in your grade will feel like that. And, growing old just happens, growing up is optional. You won't lose your freedom one day to the next. ;)