Is it permissible for a woman to travel to Jordan for study if she is accompanied by some friends, knowing that the university is mixed-gender and the duration of study is two years?

A woman is not permitted to travel except with a mahram, due to the Prophet's (peace be upon him) saying: "It is not lawful for a woman to travel for three (days/distances) except if a mahram is with her."

Scholars have differed on the permissibility of a woman traveling for Hajj with a trustworthy group without a mahram, given the great importance of the Hajj obligation.

The mahram is required for travel only, not for residency.

Therefore, a woman can be accompanied by a mahram when traveling for study, then the mahram can return and she remains, and then another mahram can come to accompany her on her return journey.

Travel without a mahram is not permissible, even if it is for study.