The common denominators throughout the bais yaakov system are their rule books and their ideal end products. Uniform, no talking to boys, tznius, good middos, and being taught the majority of your school subjects by Rabbis and rebbitzins.
Sounds like any other Catholic school, except that I am decently sure that most, if not all (secular) subjects are taught by MRS’s. The Hebrew principal is a MRS, not a Rebbitzen. I can’t speak for the Hebrew teachers, but I imagine that it is a mix.
P.S. I assume you are talking about the high school and not the elementry school.