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

Breaking down material into digestible bites.

Tanika R.

cK-12 has helped me regulate my time of doing homework and being able to go back to a recording of a class if I need to remember anything for homework or notes.

Summer

It helped a lot with my school and I just love this website I will use this for the rest of my life!

Summer

I appreciate the free text books. They gave me so many things to learn.

Sumit Y.

It helped me raise up my grades by a lot by telling my teacher to send me some lessons on what I didn't understand that well.

Sihyoung K.

I am an eighth grade student, taking geometry and without cK-12 I would not be able to take this course due to the fact my school doesn't have a teacher to teach it! So this helps me and my online teacher for me to learn geometry!

Sierra A.

Ck-12 has helped me with things I never knew about I hope they teach me new stuff. Thanks Ck-12

Sierra

ck12 has helped me allot. i really apprciete the website

Shyanne S.

It has help me a lot with the hints happy Anniversary ck-12

Shaylee

it helped me get a good grade in science i guess, so thanks!

Sean C.