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Khan Academy is a nonprofit on a mission to provide a free world-class education for anyone anywhere. To accomplish this goal, we've created a personalized learning experience that uses videos and exercises to engage students across a wide range of subjects. Currently, math is our richest content area, with standards-aligned materials stretching from early math to calculus. In the hands of a skilled teacher, Khan Academy can be a powerful classroom tool.

Teachers explain why they use our site (4:38)

We believe teachers are critical to student success. Our goal is to empower students to take ownership of their own learning and to empower you to spend more time doing what you do best: personally interacting with every student, providing guidance and encouragement, and engaging your class in collaborative activities.

Teachers explain how Khan Academy empowers students (4:19)

To learn more about our vision for personalized education, check out this video from our founder, Sal Khan. It's easy to incorporate Khan Academy into your classroom as a supplement to your existing curriculum, and this tutorial series is a great place to start.