depends on how you "see" your job ....
ie. you could try and "make" something out of those little rascals by trying your very best and teaching them as much as you can => very stressful job since those asshats aren't intersted in anything a teacher has to say ....
or
you just go do your job and nothing more, and just relax because let's face it, whatever they teach in high-school is peanuts anyways ....
ie. my math teacher in my last 2 years of high school would let us simply choose if we wanted to follow his lessons or not, if we were to follow them we had to shut the fuck up and pay attention, so long story short, since we knew we had the freedom to go do whatever we wanted, we actually "chose" to be in his class and learn something....
well i can tell you this, that man has probably taught me the most in my entire high-school career .... not just math, but also valuable life lessons ..... and the beautiful part about it, he didn't give a flying fuck about that school :)