Ruling on a girl studying in a school with free mixing of men and women and where hijab is prohibited

This message reached us from southern Yemen, from the confused listener (A. S. N). She says: I am a second-year high school student, and I believe in Allah and His Messenger and the Last Day, and I pray and fast, praise be to Allah. I ask you this question which confuses me greatly: I study with male students, and male teachers teach me, and female students are prohibited from placing veils on their heads, which makes me think about leaving school. I have the desire to complete my education, especially since I am at the end of my schooling. Please advise us, may Allah reward you. And may He guide you to what He loves and is pleased with?
Answer: It is known that hijab is obligatory, and exposing the head, face, and the like is prohibited. The head is more severe, because those who said that it is permissible not to cover the face and hands, as for the head, it must be covered. So, O student, it is obligatory for you to cover it, covering the head and covering the face, and you should have from the covering what helps you in reading. Do not mind them, even if they mock or ridicule, do not mind, until you complete your studies. You should be veiled and hidden by what Allah has prescribed until you complete your studies. If you cannot do so, then separate yourself and seek a study place without free mixing, in any place, because free mixing contains danger, and if it is accompanied by exposure, its danger becomes greater. If it is facilitated for you to cover yourself and complete your studies without being in close proximity to the boys, but in a section not adjacent to the young men, then there is no blame in this ... ... for completing with hijab, with hijab of the face and hijab of the head, and that you have one eye opening through the burqu' or something similar, through which you look with one eye until you complete your studies, or two openings for the eyes until you complete your studies, then you finish this study. If this is not facilitated, then separate yourself and seek another place where you can complete your studies. As for remaining in this state, it is not permissible, remaining with an exposed head and exposed face, this contains great trial and great danger. Yes.