I wish I had an answer for you, but if anyone from the Yeshivos is reading this, please note it is VERY hazardous outside right now. Cars are slipping and sliding all over the place and I doubt buses will do very well either.
Usually, the yeshivas decide whether school is cancelled by what the public schools are doing, but since it is vacation for them, you really need to call your schools. Most schools do have an infoline. I am just wondering that since most of the side streets are impassable, whether will schools be opened tommorrow??