At CK-12, we believe every child on this planet should have equal access to great education.
All students are unique.
Each has a different pace of learning.
different interests,
and different goals.
However, with limited time and resources,
it's a challenge for educators to treat students as individuals
and cater to their varied needs.
Our philosophy is that learning is a personal journey.
The CK-12 Foundation was founded with the mission to enable everyone to learn in his or her own way.
We pair high-quality content
with the latest technologies.
We equip students,
We equip students, teachers,
We equip students, teachers, and parents with everything they need.
For free.




















FlexBooks 1.0
Creative Commons BY-SA
Adaptive Practice
PLIXPlay, Learn, Interact, eXplore
Simulations
Creative Commons BY-NC
FlexBooks 2.0
Integrated with Google Classroom, Canvas, Schoology
Teacher Dashboard
Flexi 1.0
EdTech Awards
CK-12 Curriculum License
Flexi 2.0
Flexi 2.0 with FlexBooks and Adaptive Practice
Flexi Apps
Support for 300+ languages and dialects
Flexi Teacher Assistant
AI on Custom Curriculum
Partnership with NVIDIA