The original all girls yeshiva system seamstressSarah Schenirer in 1917 in Kraków, Poland. , also referred to as BY. Notorious for saying that they are never the typical Bais Yaakov girl, this is the only mass established frum Jewish girl school system. There has been much demand for a Bais Yaakov girls gone wild video, but it has not been produced- due to not enough kids at risk coming out of the system.