I agree, boarding school administrators would always be looking out for the best that they can find, not necessarily all about academic merits that one has achieved but I'm sure they're also looking for someone with good character background and personality. I am glad that you're considering teaching in a christian boarding school considering the advantages it has when it comes to class size and the different atmosphere it can offer compared to a normal public school. So just do your best to introduce your great assets as a teacher to them. Through what you have written here, I'm already convinced that you can be a good addition to a faculty. Good luck!