Really want to go to boarding school?

So after living in NYC for a month, I'm pretty board with where I live. What CO-ED boarding schools would take me just for senior year? Or would they take me for junior year? (this coming school year) Also, is it hard to get financial aid? Basically what I'm looking for is a CO- ED boarding school that isn't insanely expensive and has financial aid?

Hoosac School is a good option. This coed school offers
both boarding and day school options. It introduces new and specialized
courses yearly in addition to the standard academic programs. They also
offer varied sports programs like lifeguard training, skiing,
snowboarding, and more. Find out more by visiting this link.