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

Comments from Educators

I have been able to use CK12 to allow my homeschooled student to explore and expand on concepts we have studied in greater depth.

Donna

ck12.org has been a great find! Free, quality on-line textbooks that can be customized as desired. PLUS on-line 'instant' quizzes that provide feedback and links to my LMS - a true TREASURE! Congrats on 10 Years!!!

Donna E.

CK-12 provides great mini lessons, which can be used as Bell Ringers or introductions to lessons.

Donna

CK-12 has helped liberate my classes from a traditional textbook. Now my students can read the content they need at their own level.

Donald K.

It is helping us in our Catholic school System in the Diocese of Gbarnga, Liberia- West Africa

Dominic C.

by helping kids who need tutoring at home

Dolores C.

when students need home tutoring

Dolores

My students love CK-12's Braingenie, and I do too. This is my 2nd year using Braingenie, and I have helped several other teachers become acquainted with it too. I especially love that I can create the goals for my students and then track their progress through the reports.

Denise T.

CK-12 has given my kids a great foundation of knowledge in the subject they are studying, while allowing me the opportunity to add additional information and videos if needed.

Denise R.

I would like to have access to the webinar to use some of the 3-5 resources. I liked the tremendous amount of activities I can use with my fourth grade class.

Denise H.

Comments from Students

ck-12 help me to improve a better grade and it help me on my skills on math i think this a phenomenal,amagazing and magnificent app that all teachers should use.C:

Grecia O.

It helped me learn.

Graham M.

It's really easy to use and kindof fun to use rather than other online education websites.

Gracie H.

It has helped me because sometimes I don't get my teacher and then I go and search websites that will help me and then my teacher told me to use ck-12 and that's what helped me and she puts she puts assignments on ck-12 for the whole class and sometimes she puts science assignments.

Gracia

Science has always been a harder subject for me, but ck-12 has super helpful and interesting information that is easily comprehended and fun to read. Thanks, and happy birthday!

Grace S.

It helped me do science.

Grace P.

hi ck-12! i really love studying with ck-12

Grace

I'm just getting started, but from what I already know this program makes education easier and faster. Also, it helps when it comes to management of time education.

Glorious H.

I personally like the idea of flash cards and execises, this are very excellent when it comes to learners revision

Gaurav K.

It helped with all the facts.

Giovanni W.