Which Boarding Schools Have More 10th grade Spots?

We are looking to apply again this fall but this time for 10th grade. Do you guys have any advice as to which schools tend to have more tenth grade spots available?

@GMTplus7 had a thread with a bunch of stats a while back. I don’t feel like searching for it, but look through his threads.

Voila
http://talk.collegeconfidential.com/prep-school-admissions/1687542-identifying-hidden-gem-schools-by-the-numbers-and-considerations-for-admissions-after-9th-grade.html

Thank you!