Testimonials

See the opinions of students and educators just like you. Select from the following to learn more.

Let Your Students Explore with CK-12!
X
Let Your Students Explore with CK-12!
Using CK-12 Every Day in Class
X
Using CK-12 Every Day in Class
Instantly See CK-12 Content in More Than 90 Languages
X
Instantly See CK-12 Content in More Than 90 Languages
Customizing CK-12 with Regional Content
X
Customizing CK-12 with Regional Content
Save Money and Own Your Standards with CK-12
X
Save Money and Own Your Standards with CK-12
Sharing CK-12 with Google Classroom and More
X
Sharing CK-12 with Google Classroom and More
Why Teachers Love CK-12 FlexBooks®
X
Why Teachers Love CK-12 FlexBooks®
CK-12's Free, Platform-Agnostic System for Finding and Editing OER Content
X
CK-12's Free, Platform-Agnostic System for Finding and Editing OER Content
CK-12's PLIX and Interactives Help Students to Work Together
X
CK-12's PLIX and Interactives Help Students to Work Together
CK-12 Made My Job Easier!
X
CK-12 Made My Job Easier!
"I Use CK-12 Videos Whenever Possible"
X
"I Use CK-12 Videos Whenever Possible"
CK-12 Meets and Exceeds Standards Requirements
X
CK-12 Meets and Exceeds Standards Requirements

Comments from Educators

Very good resources and excellent lessons.

Erington

Great resources to support MYP curriculum without textbooks

Erin

I have relied on CK-12 for simulators to help my students understand topics that are not able to be done easily in the classroom and has helped them to learn and also saved the school money!! Thank you and happy anniversary!!

Ericka O.

It has helped me with the additional resources available. They are very useful.

Emma

its helps me get better and learn new resources

Eric S.

lesson plan for the topic mendel's law of inheritance

Eric C.

Send Geometry support materials

Emmanuel N.

Access to awesome texts for my students!

Emma

I love using the free resources as a literacy component in my science classroom. Many topics that I teach can be found at Ck-12 and the content is both accurate and engaging!

Emily I.

I began homeschooling and immediately went into panic mode, but after another homeschooling mother recommended this site I was immediately put at ease.

Elizabeth S.

Comments from Students

Well done CK-12! You've been helping me at my studies. You help me to gain a lot of extra materials! Such wonderful and helpful you are. Keep helping in education unit and keep improve till became the best! -Warm Hug-

Hafidh H.

It has helped me get better grades in class!

Erika

As an 8th Grader, CK-12 has been a truly amazing resource not only for school, but for curing my curiosity outside of the curriculum. I want to thank everyone who contributes to this incredible organization!

Hannah

CK-12 helped me and know I get more and it helps me learn more and get things even better than I did before.

Hanslhy

Hello! I greatly appreciate all that CK-12 has done to help me throughout my time in biology! I look forward to the amazing things that CK-12 will do in the future!

Evan W.