Khan Academy - free world-class education for anyone anywhere

Learn almost anything for free.

A free world-class education for anyone anywhere.

The Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education to anyone anywhere.

All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get a leg up in earthly biology. The Khan Academy's materials and resources are available to you completely free of charge.



With a library of over 2,400 videos covering everything from arithmetic to physics, finance, and history and 180 practice exercises, we're on a mission to help you learn what you want, when you want, at your own pace.

How it works for students

Students can make use of our extensive video library, practice exercises, and assessments from any computer with access to the web.

Complete custom self-paced learning tool
A dynamic system for getting help
A custom profile, points, and badges to measure progress

Coaches, parents, and teachers

Coaches, parents, and teachers have unprecedented visibility into what their students are learning and doing on the Khan Academy.

Ability to see any student in detail
A real-time class report for all students
Better intelligence for doing targeted interventions

Over 2400 videos

Our library of videos covers K-12 math, science topics such as biology, chemistry, and physics, and even reaches into the humanities with playlists on finance and history. Each video is a digestible chunk, approximately 10 minutes long, and especially purposed for viewing on the computer.

"I teach the way that I wish I was taught. The lectures are coming from me, an actual human being who is fascinated by the world around him."
—Sal

A world of exercises, with help along the way

Practice math at your own pace with our adaptive assessment exercises. You can start at 1+1 and work your way into calculus or jump right into whatever topic needs some brushing up.

Each problem is randomly generated, so you never run out of practice material. If you need a hint, every single problem can be broken down, step-by-step, with one click. If you need more help, you can always watch a related video.


I'm a teacher, coach, or parent, how do I start using the site with my student(s)?
First things first: you need an account, and you need to be signed in on the Khan Academy. So, sign in or sign up. Once you've got an account you can actually start getting students to add you as their coach.

The next step: every student that you want to coach needs an account as well. Students over 13 can sign up for Google or Facebook accounts immediately.

If your students are under 13:

You currently have two options: you can sign your school up for Google Apps for Education, which will help you provide each student with a Google account that can be used with Khan Academy, or you can have your students' parents individually create accounts for each student on either Google or Facebook. We are constantly working to improve this situation, but that's the best we've got at the moment (sorry!).

If you already have Google Apps for Education accounts but aren't able to use them to sign in on the Khan Academy, you might need to upgrade your account.

Clicking "Get started" should take you through the process to finish the upgrade. Khan academy

Once this is done, each student will need to identify you as their coach. There are detailed instructions and screenshots on the Coach page