DY, I’m saying its legally possible and probably geographically doable to a large extent, but the non-frum don’t want to see the frum break off because the frum property taxpayers are now funding the non-Jewish public schools. So it would be politically very difficult to push through.
KJ did exactly that 20 years ago and it took three laws, in three different legislative years, including a court fight that went all the way to the U.S. Supreme Court – where KJ lost but Governors Mario Cuomo and George Pataki and the legislature reintroduced new laws customized to pass the court rulings – till it finally stuck. But there it was a matter of KJ wishing to form its own breakaway school district and the neighboring districts happy to see them off their own rolls. In Ramapo the non-frum will not want to see the frum break off because the non-Jewish demographics (largely immigrants, many illegal and indigent) can’t fund their own public schools.