online math classes, advanced math textbooks, math games, and more for high school and middle school students. find out why our students win so many awards.

sparknotes are the most helpful study guides around to literature, math, science, and more. find sample tests, essay help, and translations of shakespeare.

learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. khan academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

international academic competitions united states division presenting quiz competitions in history, science, and geography for elementary, middle & high school students across the usa! resources our events study guides past questions & exams past us national championships exams past online regional qualifying exams learn more

clever is the platform powering digital learning for k12 schools--one single place for identity, access, security, and classroom engagement

with our free mobile app or web and a few minutes a day, everyone can duolingo. learn 30+ languages online with bite-size lessons based on science.

get step-by-step textbook solutions or ask homework questions to get expert answers, plus textbook rentals, writing & citation help, exam prep and more.

a real time multiplayer quizbowl application