Israeli police are investigating the alleged assault of an Australian student while on a high school trip overseas.

The student was in Israel as part of a six-week overseas study program when she was allegedly assaulted by a fellow pupil.

The excursion included students from at least two Australian Jewish campuses, including Melbourne's Bialik College.

Bialik College principal Jeremy Stowe-Lindner has since travelled to Israel to provide support to staff and students. He said the authorities were immediately notified.

He said he was "deeply saddened" to learn of the allegations, with both parties involved in the incident being minors.