Crash Course is a free educational video series on YouTube covering high school and college subjects

Crash Course is a YouTube channel that teaches academic subjects through short, fast-paced videos. Each video runs 10 to 15 minutes and covers one specific topic—a historical event, a biology concept, a literary theme, or a chemistry principle. The videos use animation, on-screen text, and a narrator speaking directly to the camera to explain ideas clearly.

The channel launched in 2012 and now has over 50 million subscribers. It covers subjects at the high school and early college level, including US History, World History, Biology, Chemistry, Physics, Literature, Psychology, Economics, Government, and Philosophy. All videos are free to watch, and there are no ads interrupting the lessons.

Crash Course is run by Hank Green and John Green (the author of The Fault in Our Stars), along with a team of educators and animators. The videos are designed to work as a supplement to classroom learning or as a standalone resource if you want to understand a topic on your own time.

Key Takeaways

  • Crash Course videos are 10 to 15 minutes long and focus on one specific concept per episode, making them straightforward to fit into a study session.
  • The channel covers high school and college-level subjects including history, sciences, literature, and social studies.
  • All Crash Course videos are free to watch on YouTube with no subscription required.
  • The videos use animation and clear narration to explain complex ideas, and many students use them to review before tests or to understand a topic they missed in class.
  • Crash Course also publishes study guides and practice questions on its website to go along with the video lessons.

How the Videos Are Structured

Each Crash Course video follows a similar format. The narrator introduces the topic in the first minute, then breaks the idea into smaller pieces and explains each one. Text appears on screen to highlight key terms and dates. Animated graphics show how concepts connect—for example, a chemistry video might animate molecules bonding, or a history video might show a timeline of events.

The pace is intentionally brisk. The narrator speaks quickly and assumes you have some background knowledge (usually what you would learn in a typical high school class). If you are new to the subject, you may need to pause and rewatch sections. Most students find this speed helpful because it keeps them engaged and makes the video feel less like a lecture.

At the end of each video, the narrator summarizes the main points in 30 seconds. This recap helps you remember what you just learned and gives you a chance to catch anything you missed.

Which Subjects Crash Course Covers

Crash Course has playlists organized by subject. The most popular are US History (63 episodes), World History (42 episodes), Biology (40 episodes), and Chemistry (46 episodes). Each playlist is designed to work as a complete course if you watch the videos in order, though you can also watch individual episodes on topics you need help with.

The channel also has playlists for Physics, Literature, Psychology, Economics, Government and Politics, Philosophy, Anatomy and Physiology, and Astronomy. Some playlists have 20 to 30 videos; others have 40 or more. New videos are added occasionally, so the total number of episodes in each subject changes over time.

If you are studying for a test on a specific topic, you can search the Crash Course website or YouTube channel by subject and episode title. For example, if your history class is covering the Civil War, you can find the exact Crash Course episode on that topic and watch it before the test.

How to Use Crash Course for Studying

Many students use Crash Course videos as a review tool after class. You watch the video to reinforce what your teacher explained, or to understand a concept you found confusing. Because the videos are short, you can watch one during a study break without losing focus.

Others use Crash Course to preview a topic before class. If you know your teacher will cover the Industrial Revolution next week, you can watch the Crash Course episode on it beforehand. This gives you a foundation, so the classroom lesson makes more sense.

Some students watch Crash Course videos the night before a test to refresh their memory on key concepts. The fast pace and clear explanations make it possible to cover a lot of ground quickly. Keep a notebook nearby and jot down the main ideas as you watch—writing things down helps them stick in your memory better than just watching passively.

Crash Course Study Guides and Practice Questions

Beyond the videos, Crash Course publishes study guides on its website. These guides summarize the main points from each video and list key terms and dates. You can read the guide before watching the video to know what to expect, or after watching to review what you learned.

The website also has practice questions tied to many of the videos. These questions let you test yourself on the material. Some are multiple choice; others ask you to write short answers. Checking your answers helps you see which ideas you understand well and which ones need more study.

The study guides and practice questions are free, just like the videos. You do not need to pay for a subscription or create an account to access them.

Crash Course vs. Traditional Textbooks and Lectures

Crash Course videos are shorter and faster-paced than a typical classroom lecture. A teacher might spend a whole class period on one topic; Crash Course covers it in 12 minutes. This works well if you already have some background knowledge and just need a quick explanation, but it can feel rushed if the topic is completely new to you.

Textbooks go deeper into each topic and include more examples and practice problems. Crash Course is better for getting the big picture and understanding how ideas connect. Many students use both—they read the textbook chapter for detail and watch the Crash Course video to see how all the pieces fit together.

Because Crash Course videos are made by educators and animators (not by your school), they explain topics in a different way than your teacher might. Sometimes a different explanation clicks better in your brain. That is one reason many students find Crash Course helpful even when they are doing well in class.

Frequently Asked Questions

Do I need to watch Crash Course videos in order?

For most subjects, yes—each video builds on the ones before it. If you are learning US History, watching the videos in order makes sense because events are connected. However, if you only need to understand one specific topic for a test, you can watch that single episode without watching the whole series.

Can I use Crash Course videos instead of going to class?

Crash Course videos are a supplement, not a replacement for classroom learning. Your teacher explains concepts, answers your questions, and gives you assignments that help you practice. Crash Course videos are best used alongside your class, not instead of it. They work well for review, preview, or understanding something you missed.

Are Crash Course videos accurate?

Yes. The videos are written and reviewed by educators and subject experts. However, like any educational resource, they present information at a certain level of detail. College-level courses or specialized topics may go deeper than Crash Course does. For most high school classes, the information is accurate and complete.

Can I read Crash Course videos to watch offline?

YouTube allows you to read videos through its offline feature if you have a YouTube Premium subscription. However, you can also watch Crash Course videos on YouTube without downloading them—you just need an internet connection. Many students watch on their phone or tablet during study time.

Is there a Crash Course app?

Crash Course does not have its own app. You watch the videos through YouTube or access study guides on the Crash Course website. You can use the YouTube app on your phone or tablet to watch Crash Course videos anywhere you have internet access.