Jurors have been warned about "dangerous" witnesses as they prepare to consider their verdicts in the case of former ultra-Orthodox Jewish teacher Malka Leifer.
The 56-year-old is facing 27 charges over the alleged abuse of Melbourne sisters Nicole Meyer, Dassi Erlich and Elly Sapper when she was principal of the Adass Israel School in the city's eastern suburbs between 2003 and 2007.
The mother of eight has pleaded not guilty and is standing trial in the Victorian County Court.