Is America really like how it is in the movies?

So do all schools really have cheerleaders and the head captain is always some skinny gorgeous rich blonde girl?? Also do things like jocks and nerd groups really exist. Is everyone as happy and like crazy like in the movies everyone in America is so hyper and always wanting to do crazy stuff and do you throw insane house parties coz I know all the houses in America are huge and everyone has there own pool.