Testimonials

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

Students Love CK-12 Study Guides
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Students Love CK-12 Study Guides
Finding the Right People to Pilot CK-12 FlexBooks®
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Finding the Right People to Pilot CK-12 FlexBooks®
The Impact of CK-12 Simulations is Huge
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The Impact of CK-12 Simulations is Huge
Create and Collaborate with Fellow Teachers Using CK-12
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Create and Collaborate with Fellow Teachers Using CK-12
Be a Champion Educator with CK-12
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Be a Champion Educator with CK-12
CK-12 Offers Material Unavailable By The Traditional Publishers
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CK-12 Offers Material Unavailable By The Traditional Publishers
Updating FlexBook® for Personalized Learning
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Updating FlexBook® for Personalized Learning
CK-12 Keeps Lesson Planning Process On-Track
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CK-12 Keeps Lesson Planning Process On-Track
El Paso Bought Laptops and Still Saved Money with CK-12!
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El Paso Bought Laptops and Still Saved Money with CK-12!
Creating Teams to Make CK-12 FlexBooks®
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Creating Teams to Make CK-12 FlexBooks®
CK-12's FlexBooks® are Easy To Use
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CK-12's FlexBooks® are Easy To Use
Let Your Students Explore with CK-12!
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Let Your Students Explore with CK-12!

Comments from Educators

In many instances, available resources are not sufficient to explain a particular problem, so it is a relief to be able to turn to cK-12 for help.

Marion N.

I LOVE YOU guys thank u very much i appreciate your efforts for helping students to learn their subjects.

Biswajit

preparing for physics lessons

Adeoye

its helps me get better and learn new resources

Eric S.

wonderful resource for my homeschoolers

Easton

I'm just starting to use it. It looks agreat resource for me especially being a new teacher.

Abdirashid A.

Helped me in my Anatomy and Biology classes - reinforcing content through grade appropriate reading

Amy B.

Send Geometry support materials

Emmanuel N.

cK-12 has provided me with material to support my curriculum, and it offers me a variety of activities to support the diverse learners and abilities in my class. Thanks cK-12; you are a teacher's dream come true.

Judith

Thanks for the science and math content

Donna H.

CK-12 helps out on 2 of my subjects and it makes learning easy. And, some of the videos are funny and it makes learning fun too. I love CK-12 because I met some people who work for it and they were so nice. CK-12 is awesome, and I think it should never be

Lillian B.

This website was a great thing for us to us because it help us to do many of our assignments. The class and I really appreciate this website and what it has provided for us. My class and I have a new assignment to do and we use cK-12 because it makes us do different things on it to provide us and them with different information they need.

Billy S.

CK12 was a great resource for my middle school students because they were preloaded on their devices. Our internet connections were spotty at best in my classroom and CK12 provided a stable platform for me to teach and students to learn.

Jennifer

It's easy to create assignments for my students and I love that they don't discriminate the fact that I homeschool my children and use this.I hope in the future they have more english to use.Thank you.

Laurisa N.

Ck-12 has brought science to life in my classroom with online videos, challenging reading and built in assessments to help my students know what they are learning.

Courtney M.

CK12.org has given me an online text and teaching materials that are NGSS aligned. This has enabled me to teach to the standards even though our school does not have a physical textbook. This has been such a lifesaver as a junior high science teacher!

Anne K.

We use cK-12 for our high school Science and math curriculums and the students love and the teachers find it easy to use and an enhancement over traditional textbooks.

Jack

It is a great multimedia resource that students like to use collaboratively and independently.

John H.

Comments from Students

it helped me survive physics last year. i would have been lost without it

Alan Grajeda

Very useful course materials

Aj P

Helped me pass college statistics

Torronce

It has helped me do online geometry.

Patrick

CK-12 has helped me in a lot of ways. You have helped my in science, math, and other subjects! Thank you!! I also appreciate that you have let me get all A's throughout 6th grade. Hope to study on this site more often!!!

Alayah Clark

Thanks for helping me with science

Selena

made me love school and work harder

Izayah

Ck-12 has helped me on many of my homework assignments.

Weston Willis

They're Just SO GREAT!

Kailey Sterling

Please do not tell anyone my name and Email, I am trusting you with it. CK-12 has helped me so much, I am in 6th grade and were using it for Science, It is so much helpful. Last year we used it for Social Studies and it was confusing but it was helpful. Thank you, CK-12.

Anonymous

Hi ck-12!!! congratulations!! Im one year older then you!! But....... you guys helped me get a A in science class and my teacher was very impress with my work I have. I just started when I first became a 6th grader, and I was pretty mad I had too start a new website. I always had gotten a D in science and I love science

Jasmine Whitfield

I love it! Thanks sooooo very much! A GREAT alternative resource from the traditional textbook.

Venise Borum

I want to thank you guys for everything you guys have done. You make things easy to access and have offered many helpful things within my classes.

Adam Bradley

CK12 is really awesome, thank you

Zach Diego

It is very fun and helpful

Willy

I did a seventh grade project using your website. It was about the different body systems and your site explained it good. Keep it up! Looking forward to coming back and seeing what's new.

Sd

CK-12 helps me understand science a lot better than just randomly taking notes. There's pictures and explanations, too, making it easier to understand the text.

Kaitlyn L

It helped me to study for my tests, I really love it

Laith