Is studying media permissible, and is it allowed to film or edit advertisements that contain unveiled women, and is sitting with women in mixed-gender classrooms permissible given the unavailability of an alternative?

Studying media is not forbidden, but photographing unveiled women and creating advertisements that include them is impermissible, due to it being an aid to sin and its dissemination. The designer and publisher of such content will bear a share of the sin of those who view it. Unlawful mixing (ikhtilat) is the gathering of men and women in one place with a breach of Sharia (definition) guidelines. Studying in a place where there is unlawful mixing is not permissible except in cases of dire necessity, while avoiding seclusion (khalwa (definition)) and lowering one's gaze.