Jerusalem: A former Melbourne school principal accused of sexually assaulting female students has lost a bid in an Israeli court to stop a further psychiatric examination to assess if she is mentally fit for extradition.

The Jerusalem Supreme Court on Tuesday rejected an appeal filed by Malka Leifer's lawyers against a District Court decision handed down in late September that ordered a new psychiatric panel to assess and report on the 52-year-old's mental state.

The appeal was heard a week before the new psychiatric panel was due to present its findings to the Israeli court.

Accused child sex abuser Malka Leifer in February last year. Credit:AP

Leifer faces extradition to Australia on 74 charges of sexually assaulting female students during her time at Melbourne's ultra-orthodox Adass Israel school.