Chances for me at Middlesex and St. Marks?

<p>I am in ninth grade at a junior prep school, Cardigan Mountain School, and I’m applying to Middlesex and St. Marks and other schools for tenth grade. I made honors and high honors at my public middle school, and ended in eighth grade with straight A’s. At Cardigan, I was placed in 1 section classes for Biology, History, and English. I take geometry and spanish one. At Cardigan I am getting 2 C’s and 3 B’s. I recieved a 63 percentile on the SSATs I do varsity cross country running and have done crew for 2 years. I have been involved in a LOT of community service. I was also the prop master at my schools theater department. So what are my chances of being accepted to Middlesex and what are my chances for St. Marks.</p>