CK-12 is completely free for students, teachers, parents, homeschool families, and schools. As a nonprofit organization, CK-12's mission is to provide high-quality educational resources at no cost to learners and educators around the world.
Do I Need to Pay for an Account?
Creating a CK-12 account is free and gives you access to additional features, such as:
- Saving your progress
- Creating and joining classes
- Personalizing your learning experience
- Accessing AI-powered tools and saved resources
How Is CK-12 Free?
CK-12 is a 501(c)(3) nonprofit organization funded through donations, grants, and philanthropic support. This funding allows CK-12 to provide free educational content and tools without charging students or teachers.