Disclaimer: I'm not Jewish, and this question is not about me. I'm not very well versed in these subjects. I've previously read questions asked here on Mi Yodeya, as I find it very interesting.
I work teaching at a university in Buenos Aires, Argentina (teaching Food Science). This semester, classes are taught on Tuesdays and Fridays, from 17-22 in the evening. These are lenghty laboratory practices, and rescheduling is not possible. One of the students is a practicant, and he is having many troubles taking this class.
Out of curiosity, is it possible to take classes in the evening on Fridays? Would it be possible for him to get a special dispensation from a rabbi? Would there be some precedents or opinions where I could find out more about this subject?
Thank you very much in advance.