There's a reason why nearly 10 million kids a month come to Shmoop to get help with test-prep and studying: The site is funny--funny in an adolescent way—their way. Why the yuks? Because Shmoop surveyed students and found that what they disliked most about conventional test-prep and online learning is that it's boring. So, Shmoop ads jokes, word-play, sarcasm, whimsy. Its philosophy is best summed up by a quip from its introduction to SAT-prep: "Why learn about geometry without ninjas when you can learn about it with ninjas?"