Boarding schools want applicants who are pursuing their passions in meaningful ways. Interpret that as you’d like.
I don’t mean to be short, but your continued pattern of questions comes across, to me at least, as the “grasping at straws” approach to BS admissions. There is no magic formula to an acceptance, sorry to say. Pursue your passions, get good grades, score high on the SSAT, nail the interview and essays, and let the chips fall where they may.