well at my current school they dont give a shit and will laugh when you fail out, but thats university... im sure you're talking high school, and yes, they took that stuff pretty seriously, teachers got pissed when i didnt do homework and when/if yo udisturb the class or be a jackass you can get sent to the principals office pretty quick and probably get a saturday detention, but im sure it can be wayy different depending on which highschool your attending.