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

cK12 has helped me immensely with book resources for my students. Now they get to read smaller sections and not be so encumbered with such large science textbooks. The practice is becoming a very valuable tool with my students as well.

Kristin

I am a Science Olympiad coach for Anatomy and Physiology at a middle school. This is our first year as a team, so I have spent hours searching for materials. Your site offers just what we need.

Kippi F.

kindly email a lesson plan for Angles forms by intersecting secants.

Kimberlee

Finding material for my chemistry students, and also creating my own online text.

Kim W.

I use Ck-12 to find resources for my high school Significant Support Needs class.

Kim C.

CK-12 has revolutionized they way I work with students. I am most especially grateful because it allows me to work with students who are distance learners.

Kim

ck-12 has helped me immensely regarding my preparation for the tasc ged. Thank you so much for this excellent educational website !

Kevin N.

Its fantastically helpful. My students LOVE ITTT!!!!!

Kent R.

You have helped gain me so many assignments with full distinctions

Kelly N.

So many STEM resources at all grade levels available from ck-12!

Katy

Comments from Students

Ck-12 has helped me a lot with science so I was wanting to challenge myself with 8th grade level.

Elliote D.

Its a great site!

Ellen

CK-12 has helped me so much in school, whether for the basis of a topic or extra-credit work. Happy Anniversary, and keep up the great work!

Ellie

Helped me pass my classes. Very helpful!

Elishah A.

It boosted me through a lot of math stuff.

Eliott

ck-12 has helped me because everyone time i go on it it helps me learn new and interesting facts.

Elijah J.

it helps with me math

Elijah

CK-12 helped me by improving my grades even though my grades are getting better and better.

Darriyuna

Helped me by watching different videos.

Daniela T.

ck 12 helped me with my learning by giving an explanation and justifying what i'm supposed to know in y grade levels. I'll happy 10th anniversary and thank you :D 5 stars

Darik A.