If you have an arts talent, especially in music, you can try seeing if one of the middle schools with an arts program has a place for you. (Sometimes students move or leave public school for private school, and a space will open up.) A good school to try would be Manhattan East for Arts and Academics (MS 224), which is Citywide unzoned, and has strong academics. They field an excellent jazz band and orchestral band. It is a small G&T school, and has a warm environment. It places many students at LaGuardia, Frank Sinatra, Beacon, Eleanor Roosevelt, Bronx Science, Brooklyn Tech, and other great high schools. Good luck!