Is it permissible for a veiled girl to remove her hijab during her training period in France, where wearing it is prohibited, in order to complete her studies?

If the prohibition of hijab means only uncovering the face and hands, then there is latitude in the matter due to jurisprudential اختلاف (disagreement). However, if the prohibition includes covering the head and limbs, then it is not permissible for a Muslim woman to uncover them in front of non-mahram men. In such a case, abandoning studies becomes obligatory, and it is necessary to search for another place of study where the freedom to wear hijab is available. We advise you to fear Allah, maintain your hijab, and be proud of your religion.