The extent of mixing with one's peers such as classmates, colleagues etc.
السلام عليكم ورحمة الله وبركاته.
I wish to ask about the extent to which I am allowed to mix with those who commit sin openly. Oftentimes I have to be with such people due to being in high school.
My muslim peers backbite upon each other and others, speak with profanity, and speak of many immoral matters openly, despite my asking of them to not do so. Even the best amongst them at least aids the other with sinful activities, though that person is sometimes more receptive to advise.
Indeed it is also a place where free-mixing is possible, though I try my best to not look at them, and limit my verbal conversations, but sometimes I interact with them more when it is necessary to help each other with studies, and end up gazing upon them.
Due to my mixing with my peers for such long periods regularly I have been unable to help myself from developing feelings of companionship with them. Sometimes I accompany them with their activities (games and whatnot), and sometimes we help each other with studies, and sometimes I respond to their conversations, and sometimes I leave the classroom when there is no teacher taking a class, wishing to distance myself from them. I have been stuck in this cycle, falling into sin myself, forgetting manners and etiquette.
Unfortunately since they are my classmates I will have to be with them for some more time.
By Allaah I ask you to advise me, and tell me what I should do, and to what extent I am allowed to mix with them.
جزاك الله خيرا.