Testimonials

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

CK-12 Simulations Lead to Richer Learning Experiences
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CK-12 Simulations Lead to Richer Learning Experiences
CK-12 Simulations Connect Classroom with Real World Situations
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CK-12 Simulations Connect Classroom with Real World Situations
CK-12's Key Role in the #GoOpen Movement
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CK-12's Key Role in the #GoOpen Movement
With CK-12, Updating Content has Never Been Easier
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With CK-12, Updating Content has Never Been Easier
Why Mrs. P Loves to Use CK-12 in Her Classroom!
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Why Mrs. P Loves to Use CK-12 in Her Classroom!
Create and Collaborate with Fellow Teachers Using CK-12
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Create and Collaborate with Fellow Teachers Using CK-12
Student Engagement: Working Independently Using CK-12
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Student Engagement: Working Independently Using CK-12
Parents Love CK-12
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Parents Love CK-12
CK-12 Has Engaging and Interactive Content
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CK-12 Has Engaging and Interactive Content
CK-12 Content to Match the Right Level
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CK-12 Content to Match the Right Level
CK-12 is User-Friendly and Fits Each School's Style
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CK-12 is User-Friendly and Fits Each School's Style
Pick Up Where You Left Off with CK-12 FlexBooks®
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Pick Up Where You Left Off with CK-12 FlexBooks®

Comments from Educators

I'm a first year teacher in an impoverished school district. Having virtual tools is the best way to close the achievement gap between my district and well-funded schools. Thank you!

Barbara F.

Providing lesson resources.

Brittany S.

Amazing books for my students at no cost. Thanks!

Aurora

plan lessons

Artemis B.

CK-12 is an amazing resource to teach my students! I love that I can collage material and personalize material to suite each of my classes. Thank you for all that you've done and please keep up the great work!

Arpit

very good after all it is a helpful site to use.

Arianna B.

CK helps me on my practice teaching experiences

Ariane

Ck-12 has really helped me pass my praxis test and it helps me daily with my classroom teaching my students to expand their mind.

April R.

I am an italian teacher of chemistry. I like my work and new teaching strategies. Often some of my students can speak English better than italian and as I know how much important english is, I invite them to keep an english lecture on a particular topic for the whole class, including me. Your videos, tests and documents are really helpfull in this! Thank you very much

Antonietta

CK-12 is an excellent resource for teachers and students. It has been very helpful in providing intervention & remediation for my students.

Antoinette C.

Comments from Students

CK-12 has helped me by understanding my subjects more and making me smarter than before.

Angel A.

CK-12 has helped me immensely with math, physics, and chemistry throughout these last few years. Thank you CK-12.

Angel

ck-12 helped alot by making me ready for my mid-year exams and pasted them

Ange N.

It helps me to learn other facts that I did not know.

Anfernee D.

Ck helped me by learning about articals that i didn't even know about

Anessa M.

cK-12 is a fun way to learn!

Andrew M.

CK12 has helped me with my science quiz and notes.

Andy M.

Well it has helped me study for many many tests over the years

Andrew F.

Ck-12 is a very cool website it is the best and helped me through a few years :O thank you for helpin' me with my science, and such and many many things ! Love from me ! -Amy

Amy

It's helped me with science a lot.

Amy