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

This is my first time at your website. I have demystified mathematics and looking to create and publish projects that enable students to become accountable for sense making to overcome previous barriers to progressive math studies to qualify with problem solving skills for 21st century careers from math-based STEM field curriculums for starting salaries of $60,000.

Jerry R.

GIVES READING ACTIVITIES TO KIDS

Jenny B.

Providing great resources for my homeschooling needs

Jenny

cK-12 is a wonderful resource. I am a middle grades science teacher and have enjoyed this resource on a weekly basis.

Jennifer R.

Congratulations! You have done good work and helped many in their education journey. Interactive practices, instantly graded tests, and outlines and explanations, including videos and PLIXes, have helped me and my math students.

Jennifer T.

Amazing resources for my 5th grade class! Grateful for it!

Jennifer S.

Looking for a better way to explain scale drawings and proportions to my special education students

Jennifer L.

I value cK-12 as a resource. I am a middle school science teacher and use cK-12's website on a weekly basis.

Jennifer R.

It helped my son so much he is algebra 1 and is passing it very well

Jennifer D.

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

Comments from Students

This site has helped me study for test in my science class. The quizzes are spot on and the activities I can do really help nas well.

Robert K.

I have advanced in knowledge of calculus

Robert Y.

I like this website because my science teacher has us read out of the books on this website and it's alot better then doing a powerpoint

RJ F.

CK-12 has given me a library of awesome resources to utilize that help me better understand the topics in my classes.

Robbie R.

it has helped me learn many things that i would not have the chance to learn for a while

Rj

CK-12 has helped me be able to access information that would be in my text books when I am out of school and it is a great source for studying for exams!

Morgan

its helped me learn a lot of things i was struggling with

Monunique A.

you helped me get A's on my quizzes

Monique

CK12 helped me by improving my math skills by nearly 25 percent! Without CK12, I doubt I'd ever pass my math class!

Moneebah A.

You saved me from using an old gross textbook and helped me study and take notes in my biology class

Monique