School of Rock

In this 2003 rock comedy, Jack Black plays a washed-up rocker who scams his way into teaching at a posh prep school, armed with nothing but a guitar and a dream of sticking it to the Man. He turns his class of nerdy kids into a face-melting rock band, teaching them life lessons like how to shred a solo and the importance of a killer stage dive—because who needs math when you've got rock 'n' roll? The best part? Watching him convince a bunch of straight-laced kids that winning the Battle of the Bands is way more important than their actual education.