Sounds rough man. There were occasional fights that broke out at my high school back in the day, and I think half of them were guys fighting over some girl. But it was tame compared to what you seem to be dealing with. I hope those kids in your PE class get their asses kicked.
the media thing sounds like it's getting worse but other than that it just sounds like school has always been (for the last x decades). I honestly think being a teacher is one of the bravest professions ever, both in terms of dealing with cunt students and also in terms of resisting becoming jaded and careless.
maybe you should consider changing schools before dropping out, yshf.