The grey zone
Going abroad to study is not necessarily a sin. Watching films may not by itself be a sin. Talking to the opposite gender is often not a problem. But it's all too easy to mix with the wrong crowd abroad, come across inappropriate scenes in films, and walk down the path to zina. Too often we do not consider avoiding actions which may not be sins by themselves but open doors to sin. Not reviewing before exams doesn't cause you to fail directly. But it's pretty obvious what would happen to such a person. Similarly, mixing with the wrong crowd or watching a certain film may not be a sin by itself. But if sinning is the probable outcome, then you're better off avoiding it. I will not ask that you must avoid all that "might" contain sin. Rather, I ask that you think twice and ask yourself: Is the benefit worth the risk?