Malka Leifer took advantage of students’ vulnerability to sexually exploit them, prosecutor alleges

Justin Lewis began his closing address on Wednesday afternoon after four weeks of evidence about Leifer's alleged abuse of three Melbourne sisters

Ultra-Orthodox Jewish school principal Malka Leifer allegedly used her position of power to sexually exploit her teenage students, taking advantage of their vulnerability, a jury has been told.

Leifer, 56, is facing 27 charges over the alleged abuse of Melbourne sisters Nicole Meyer, Dassi Erlich and Elly Sapper when she was head of religion and principal of the Adass Israel School in the city's eastern suburbs between 2003 and 2007.