Dismiss
Skip Navigation
100% Free, Personalized Learning for Every Student Create digital classrooms, customize textbooks, and learn
K-12 STEM concepts.
jumpstart logo
Jumpstart your teaching!

Join a community of educators transforming and creating content this school year. Learn More

Find a Standards - Aligned FlexBook® Textbook
FlexBooks® are FREE, digital textbooks that can be fully customized for your classroom needs.
Introducing CBSE Maths, Physics, Chemistry, and Biology FlexBooks®
Explore schools near you using CK-12 Get Started
“Each student comes in with different skill sets and gaps. CK-12 allows students to go at their own pace and get any intervention that they need.”
—Michael Cazares, Los Angeles Unified School District
What People are Saying
“If you can engage a student, you’re going to increase learning. With the different modalities that CK-12 provides, a student is going to find a component that brings learning to life for them.” Susan Sudberry Instructional Technology Specialist Tullahoma City Schools, TN
“CK-12 was an obvious choice for us. The content is rich. It's engaging to students, and it's flexible. It allows us to tailor the tools to meet the needs of the instruction.” Dr. Mike Nelson Director of Curriculum and Assessment Coeur d'Alene School District, ID
“CK-12 believes in access for any student, anywhere. No matter where you live, no matter what you come with, or your resources. Every student in the world should have access to exceptional material.” Dr. Cynthia Ontiveros Principal, Young Women's STEAM Research & Preparatory Academy El Paso ISD, TX
Please wait...
Please wait...