Joseph:”If they are all truly moving out, or have already moved out, how is it that the school yet has such a large student body?”
Large families, also many coming from neighboring areas such as Kensington, Bensonhurst and Midwood, and some Modern Chassidish parents from BP who choose to send their daughters to BYOBP rather than a Chassidish school. Ask anyone who lives anywhere even close to the heart of BP, the ratio of Chassidish families to Litvish/Yeshivish/Modern families… it’s easily 10:1 and clearly diminishing by the day.