Start with an Hour of Code, then discover more block-based coding in our Express Courses. Get creative in our fun programming environment, Sprite Lab, or watch cool videos to learn more about key topics.

Code.org provides free computer science and AI curriculum, plus professional development to support any teacher—no coding experience needed!

Hello Ruby - The world's most whimsical way to learn about computers, technology and programming. Activities on a range of CS topics, like the ability to decompose a problem, spot patterns, think algorithmically, debug problems and work together.

Build and explore with Minecraft! Players write code that instructs the Agent to execute their commands and overcome in-game obstacles.

Anyone, anywhere can organize an Hour of Code event or try any of the 100 one-hour tutorials, available in over 45 languages. Make the Invisible Visible encourages the next generation of creators to explore, craft, and showcase how coding can bring their favorite things to life.

Adapted from our CS Discoveries and CS Principles courses, these short, self-paced modules for middle and high school students are a great way to learn concepts that span all programming languages and tools.

Explore the world of computer science with engaging videos, self-paced tutorials, programming activities, and more!

Learn how to code, create, and build web applications, from the foundations of object-oriented programming in C and C++, to how to write Java. Our developer tutorials can help you learn to develop and create mobile apps, work with PHP and MySQL databases, get started with the statistical processing language R, and much more.

Discover programming environments tailored to meet students at their level, empowering them to express their creativity and build more freely as they grow their programming skills.

This professional learning module prepares teachers to guide 6-12 students through Code.org's Coding with AI unit, where students leverage Large Language Models to write more powerful code while exploring ethical considerations and responsible AI use.